| 1 | 827 | doc | 		    GNU GENERAL PUBLIC LICENSE
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        | 2 |  |  | 		       Version 2, June 1991
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        | 3 |  |  | 
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        | 4 |  |  |  Copyright (C) 1989, 1991 Free Software Foundation, Inc.
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        | 5 |  |  |                        51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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        | 6 |  |  |  Everyone is permitted to copy and distribute verbatim copies
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        | 7 |  |  |  of this license document, but changing it is not allowed.
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        | 8 |  |  | 
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        | 9 |  |  | 			    Preamble
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        | 10 |  |  | 
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        | 11 |  |  |   The licenses for most software are designed to take away your
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        | 12 |  |  | freedom to share and change it.  By contrast, the GNU General Public
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        | 13 |  |  | License is intended to guarantee your freedom to share and change free
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        | 14 |  |  | software--to make sure the software is free for all its users.  This
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        | 15 |  |  | General Public License applies to most of the Free Software
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        | 16 |  |  | Foundation's software and to any other program whose authors commit to
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        | 17 |  |  | using it.  (Some other Free Software Foundation software is covered by
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        | 18 |  |  | the GNU Library General Public License instead.)  You can apply it to
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        | 19 |  |  | your programs, too.
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        | 20 |  |  | 
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        | 21 |  |  |   When we speak of free software, we are referring to freedom, not
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        | 22 |  |  | price.  Our General Public Licenses are designed to make sure that you
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        | 23 |  |  | have the freedom to distribute copies of free software (and charge for
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        | 24 |  |  | this service if you wish), that you receive source code or can get it
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        | 25 |  |  | if you want it, that you can change the software or use pieces of it
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        | 26 |  |  | in new free programs; and that you know you can do these things.
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        | 27 |  |  | 
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        | 28 |  |  |   To protect your rights, we need to make restrictions that forbid
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        | 29 |  |  | anyone to deny you these rights or to ask you to surrender the rights.
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        | 30 |  |  | These restrictions translate to certain responsibilities for you if you
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        | 31 |  |  | distribute copies of the software, or if you modify it.
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        | 32 |  |  | 
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        | 33 |  |  |   For example, if you distribute copies of such a program, whether
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        | 34 |  |  | gratis or for a fee, you must give the recipients all the rights that
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        | 35 |  |  | you have.  You must make sure that they, too, receive or can get the
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        | 36 |  |  | source code.  And you must show them these terms so they know their
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        | 37 |  |  | rights.
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        | 38 |  |  | 
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        | 39 |  |  |   We protect your rights with two steps: (1) copyright the software, and
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        | 40 |  |  | (2) offer you this license which gives you legal permission to copy,
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        | 41 |  |  | distribute and/or modify the software.
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        | 42 |  |  | 
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        | 43 |  |  |   Also, for each author's protection and ours, we want to make certain
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        | 44 |  |  | that everyone understands that there is no warranty for this free
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        | 45 |  |  | software.  If the software is modified by someone else and passed on, we
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        | 46 |  |  | want its recipients to know that what they have is not the original, so
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        | 47 |  |  | that any problems introduced by others will not reflect on the original
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        | 48 |  |  | authors' reputations.
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        | 49 |  |  | 
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        | 50 |  |  |   Finally, any free program is threatened constantly by software
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        | 51 |  |  | patents.  We wish to avoid the danger that redistributors of a free
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        | 52 |  |  | program will individually obtain patent licenses, in effect making the
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        | 53 |  |  | program proprietary.  To prevent this, we have made it clear that any
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        | 54 |  |  | patent must be licensed for everyone's free use or not licensed at all.
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        | 55 |  |  | 
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        | 56 |  |  |   The precise terms and conditions for copying, distribution and
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        | 57 |  |  | modification follow.
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        | 58 |  |  | 
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        | 59 |  |  | 		    GNU GENERAL PUBLIC LICENSE
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        | 60 |  |  |    TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
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        | 61 |  |  | 
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        | 62 |  |  |   0. This License applies to any program or other work which contains
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        | 63 |  |  | a notice placed by the copyright holder saying it may be distributed
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        | 64 |  |  | under the terms of this General Public License.  The "Program", below,
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        | 65 |  |  | refers to any such program or work, and a "work based on the Program"
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        | 66 |  |  | means either the Program or any derivative work under copyright law:
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        | 67 |  |  | that is to say, a work containing the Program or a portion of it,
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        | 68 |  |  | either verbatim or with modifications and/or translated into another
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        | 69 |  |  | language.  (Hereinafter, translation is included without limitation in
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        | 70 |  |  | the term "modification".)  Each licensee is addressed as "you".
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        | 71 |  |  | 
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        | 72 |  |  | Activities other than copying, distribution and modification are not
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        | 73 |  |  | covered by this License; they are outside its scope.  The act of
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        | 74 |  |  | running the Program is not restricted, and the output from the Program
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        | 75 |  |  | is covered only if its contents constitute a work based on the
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        | 76 |  |  | Program (independent of having been made by running the Program).
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        | 77 |  |  | Whether that is true depends on what the Program does.
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        | 78 |  |  | 
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        | 79 |  |  |   1. You may copy and distribute verbatim copies of the Program's
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        | 80 |  |  | source code as you receive it, in any medium, provided that you
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        | 81 |  |  | conspicuously and appropriately publish on each copy an appropriate
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        | 82 |  |  | copyright notice and disclaimer of warranty; keep intact all the
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        | 83 |  |  | notices that refer to this License and to the absence of any warranty;
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        | 84 |  |  | and give any other recipients of the Program a copy of this License
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        | 85 |  |  | along with the Program.
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        | 86 |  |  | 
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        | 87 |  |  | You may charge a fee for the physical act of transferring a copy, and
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        | 88 |  |  | you may at your option offer warranty protection in exchange for a fee.
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        | 89 |  |  | 
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        | 90 |  |  |   2. You may modify your copy or copies of the Program or any portion
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        | 91 |  |  | of it, thus forming a work based on the Program, and copy and
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        | 92 |  |  | distribute such modifications or work under the terms of Section 1
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        | 93 |  |  | above, provided that you also meet all of these conditions:
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        | 94 |  |  | 
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        | 95 |  |  |     a) You must cause the modified files to carry prominent notices
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        | 96 |  |  |     stating that you changed the files and the date of any change.
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        | 97 |  |  | 
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        | 98 |  |  |     b) You must cause any work that you distribute or publish, that in
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        | 99 |  |  |     whole or in part contains or is derived from the Program or any
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        | 100 |  |  |     part thereof, to be licensed as a whole at no charge to all third
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        | 101 |  |  |     parties under the terms of this License.
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        | 102 |  |  | 
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        | 103 |  |  |     c) If the modified program normally reads commands interactively
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        | 104 |  |  |     when run, you must cause it, when started running for such
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        | 105 |  |  |     interactive use in the most ordinary way, to print or display an
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        | 106 |  |  |     announcement including an appropriate copyright notice and a
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        | 107 |  |  |     notice that there is no warranty (or else, saying that you provide
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        | 108 |  |  |     a warranty) and that users may redistribute the program under
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        | 109 |  |  |     these conditions, and telling the user how to view a copy of this
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        | 110 |  |  |     License.  (Exception: if the Program itself is interactive but
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        | 111 |  |  |     does not normally print such an announcement, your work based on
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        | 112 |  |  |     the Program is not required to print an announcement.)
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        | 113 |  |  | 
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        | 114 |  |  | These requirements apply to the modified work as a whole.  If
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        | 115 |  |  | identifiable sections of that work are not derived from the Program,
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        | 116 |  |  | and can be reasonably considered independent and separate works in
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        | 117 |  |  | themselves, then this License, and its terms, do not apply to those
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        | 118 |  |  | sections when you distribute them as separate works.  But when you
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        | 119 |  |  | distribute the same sections as part of a whole which is a work based
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        | 120 |  |  | on the Program, the distribution of the whole must be on the terms of
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        | 121 |  |  | this License, whose permissions for other licensees extend to the
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        | 122 |  |  | entire whole, and thus to each and every part regardless of who wrote it.
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        | 123 |  |  | 
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        | 124 |  |  | Thus, it is not the intent of this section to claim rights or contest
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        | 125 |  |  | your rights to work written entirely by you; rather, the intent is to
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        | 126 |  |  | exercise the right to control the distribution of derivative or
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        | 127 |  |  | collective works based on the Program.
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        | 128 |  |  | 
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        | 129 |  |  | In addition, mere aggregation of another work not based on the Program
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        | 130 |  |  | with the Program (or with a work based on the Program) on a volume of
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        | 131 |  |  | a storage or distribution medium does not bring the other work under
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        | 132 |  |  | the scope of this License.
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        | 133 |  |  | 
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        | 134 |  |  |   3. You may copy and distribute the Program (or a work based on it,
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        | 135 |  |  | under Section 2) in object code or executable form under the terms of
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        | 136 |  |  | Sections 1 and 2 above provided that you also do one of the following:
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        | 137 |  |  | 
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        | 138 |  |  |     a) Accompany it with the complete corresponding machine-readable
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        | 139 |  |  |     source code, which must be distributed under the terms of Sections
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        | 140 |  |  |     1 and 2 above on a medium customarily used for software interchange; or,
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        | 141 |  |  | 
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        | 142 |  |  |     b) Accompany it with a written offer, valid for at least three
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        | 143 |  |  |     years, to give any third party, for a charge no more than your
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        | 144 |  |  |     cost of physically performing source distribution, a complete
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        | 145 |  |  |     machine-readable copy of the corresponding source code, to be
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        | 146 |  |  |     distributed under the terms of Sections 1 and 2 above on a medium
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        | 147 |  |  |     customarily used for software interchange; or,
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        | 148 |  |  | 
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        | 149 |  |  |     c) Accompany it with the information you received as to the offer
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        | 150 |  |  |     to distribute corresponding source code.  (This alternative is
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        | 151 |  |  |     allowed only for noncommercial distribution and only if you
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        | 152 |  |  |     received the program in object code or executable form with such
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        | 153 |  |  |     an offer, in accord with Subsection b above.)
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        | 154 |  |  | 
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        | 155 |  |  | The source code for a work means the preferred form of the work for
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        | 156 |  |  | making modifications to it.  For an executable work, complete source
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        | 157 |  |  | code means all the source code for all modules it contains, plus any
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        | 158 |  |  | associated interface definition files, plus the scripts used to
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        | 159 |  |  | control compilation and installation of the executable.  However, as a
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        | 160 |  |  | special exception, the source code distributed need not include
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        | 161 |  |  | anything that is normally distributed (in either source or binary
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        | 162 |  |  | form) with the major components (compiler, kernel, and so on) of the
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        | 163 |  |  | operating system on which the executable runs, unless that component
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        | 164 |  |  | itself accompanies the executable.
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        | 165 |  |  | 
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        | 166 |  |  | If distribution of executable or object code is made by offering
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        | 167 |  |  | access to copy from a designated place, then offering equivalent
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        | 168 |  |  | access to copy the source code from the same place counts as
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        | 169 |  |  | distribution of the source code, even though third parties are not
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        | 170 |  |  | compelled to copy the source along with the object code.
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        | 171 |  |  | 
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        | 172 |  |  |   4. You may not copy, modify, sublicense, or distribute the Program
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        | 173 |  |  | except as expressly provided under this License.  Any attempt
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        | 174 |  |  | otherwise to copy, modify, sublicense or distribute the Program is
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        | 175 |  |  | void, and will automatically terminate your rights under this License.
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        | 176 |  |  | However, parties who have received copies, or rights, from you under
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        | 177 |  |  | this License will not have their licenses terminated so long as such
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        | 178 |  |  | parties remain in full compliance.
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        | 179 |  |  | 
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        | 180 |  |  |   5. You are not required to accept this License, since you have not
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        | 181 |  |  | signed it.  However, nothing else grants you permission to modify or
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        | 182 |  |  | distribute the Program or its derivative works.  These actions are
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        | 183 |  |  | prohibited by law if you do not accept this License.  Therefore, by
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        | 184 |  |  | modifying or distributing the Program (or any work based on the
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        | 185 |  |  | Program), you indicate your acceptance of this License to do so, and
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        | 186 |  |  | all its terms and conditions for copying, distributing or modifying
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        | 187 |  |  | the Program or works based on it.
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        | 188 |  |  | 
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        | 189 |  |  |   6. Each time you redistribute the Program (or any work based on the
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        | 190 |  |  | Program), the recipient automatically receives a license from the
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        | 191 |  |  | original licensor to copy, distribute or modify the Program subject to
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        | 192 |  |  | these terms and conditions.  You may not impose any further
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        | 193 |  |  | restrictions on the recipients' exercise of the rights granted herein.
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        | 194 |  |  | You are not responsible for enforcing compliance by third parties to
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        | 195 |  |  | this License.
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        | 196 |  |  | 
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        | 197 |  |  |   7. If, as a consequence of a court judgment or allegation of patent
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        | 198 |  |  | infringement or for any other reason (not limited to patent issues),
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        | 199 |  |  | conditions are imposed on you (whether by court order, agreement or
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        | 200 |  |  | otherwise) that contradict the conditions of this License, they do not
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        | 201 |  |  | excuse you from the conditions of this License.  If you cannot
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        | 202 |  |  | distribute so as to satisfy simultaneously your obligations under this
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        | 203 |  |  | License and any other pertinent obligations, then as a consequence you
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        | 204 |  |  | may not distribute the Program at all.  For example, if a patent
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        | 205 |  |  | license would not permit royalty-free redistribution of the Program by
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        | 206 |  |  | all those who receive copies directly or indirectly through you, then
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        | 207 |  |  | the only way you could satisfy both it and this License would be to
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        | 208 |  |  | refrain entirely from distribution of the Program.
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        | 209 |  |  | 
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        | 210 |  |  | If any portion of this section is held invalid or unenforceable under
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        | 211 |  |  | any particular circumstance, the balance of the section is intended to
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        | 212 |  |  | apply and the section as a whole is intended to apply in other
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        | 213 |  |  | circumstances.
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        | 214 |  |  | 
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        | 215 |  |  | It is not the purpose of this section to induce you to infringe any
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        | 216 |  |  | patents or other property right claims or to contest validity of any
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        | 217 |  |  | such claims; this section has the sole purpose of protecting the
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        | 218 |  |  | integrity of the free software distribution system, which is
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        | 219 |  |  | implemented by public license practices.  Many people have made
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        | 220 |  |  | generous contributions to the wide range of software distributed
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        | 221 |  |  | through that system in reliance on consistent application of that
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        | 222 |  |  | system; it is up to the author/donor to decide if he or she is willing
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        | 223 |  |  | to distribute software through any other system and a licensee cannot
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        | 224 |  |  | impose that choice.
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        | 225 |  |  | 
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        | 226 |  |  | This section is intended to make thoroughly clear what is believed to
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        | 227 |  |  | be a consequence of the rest of this License.
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        | 228 |  |  | 
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        | 229 |  |  |   8. If the distribution and/or use of the Program is restricted in
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        | 230 |  |  | certain countries either by patents or by copyrighted interfaces, the
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        | 231 |  |  | original copyright holder who places the Program under this License
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        | 232 |  |  | may add an explicit geographical distribution limitation excluding
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        | 233 |  |  | those countries, so that distribution is permitted only in or among
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        | 234 |  |  | countries not thus excluded.  In such case, this License incorporates
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        | 235 |  |  | the limitation as if written in the body of this License.
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        | 236 |  |  | 
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        | 237 |  |  |   9. The Free Software Foundation may publish revised and/or new versions
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        | 238 |  |  | of the General Public License from time to time.  Such new versions will
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        | 239 |  |  | be similar in spirit to the present version, but may differ in detail to
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        | 240 |  |  | address new problems or concerns.
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        | 241 |  |  | 
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        | 242 |  |  | Each version is given a distinguishing version number.  If the Program
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        | 243 |  |  | specifies a version number of this License which applies to it and "any
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        | 244 |  |  | later version", you have the option of following the terms and conditions
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        | 245 |  |  | either of that version or of any later version published by the Free
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        | 246 |  |  | Software Foundation.  If the Program does not specify a version number of
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        | 247 |  |  | this License, you may choose any version ever published by the Free Software
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        | 248 |  |  | Foundation.
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        | 249 |  |  | 
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        | 250 |  |  |   10. If you wish to incorporate parts of the Program into other free
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        | 251 |  |  | programs whose distribution conditions are different, write to the author
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        | 252 |  |  | to ask for permission.  For software which is copyrighted by the Free
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        | 253 |  |  | Software Foundation, write to the Free Software Foundation; we sometimes
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        | 254 |  |  | make exceptions for this.  Our decision will be guided by the two goals
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        | 255 |  |  | of preserving the free status of all derivatives of our free software and
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        | 256 |  |  | of promoting the sharing and reuse of software generally.
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        | 257 |  |  | 
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        | 258 |  |  | 			    NO WARRANTY
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        | 259 |  |  | 
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        | 260 |  |  |   11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
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        | 261 |  |  | FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
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        | 262 |  |  | OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
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        | 263 |  |  | PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
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        | 264 |  |  | OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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        | 265 |  |  | MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
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        | 266 |  |  | TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
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        | 267 |  |  | PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
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        | 268 |  |  | REPAIR OR CORRECTION.
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        | 269 |  |  | 
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        | 270 |  |  |   12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
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        | 271 |  |  | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
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        | 272 |  |  | REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
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        | 273 |  |  | INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
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        | 274 |  |  | OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
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        | 275 |  |  | TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
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        | 276 |  |  | YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
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        | 277 |  |  | PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
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        | 278 |  |  | POSSIBILITY OF SUCH DAMAGES.
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