pierre@0: GNU GENERAL PUBLIC LICENSE pierre@0: pierre@0: Version 2, June 1991 pierre@0: pierre@0: Copyright (C) 1989, 1991 Free Software Foundation, Inc. 675 Mass Ave, pierre@0: Cambridge, MA 02139, USA. Everyone is permitted to copy and distribute pierre@0: verbatim copies of this license document, but changing it is not allowed. pierre@0: pierre@0: Preamble pierre@0: pierre@0: The licenses for most software are designed to take away your freedom to pierre@0: share and change it. By contrast, the GNU General Public License is pierre@0: intended to guarantee your freedom to share and change free software--to pierre@0: make sure the software is free for all its users. This General Public License pierre@0: applies to most of the Free Software Foundation's software and to any other pierre@0: program whose authors commit to using it. (Some other Free Software pierre@0: Foundation software is covered by the GNU Library General Public License pierre@0: instead.) You can apply it to your programs, too. pierre@0: pierre@0: When we speak of free software, we are referring to freedom, not price. Our pierre@0: General Public Licenses are designed to make sure that you have the pierre@0: freedom to distribute copies of free software (and charge for this service if pierre@0: you wish), that you receive source code or can get it if you want it, that you pierre@0: can change the software or use pieces of it in new free programs; and that pierre@0: you know you can do these things. pierre@0: pierre@0: To protect your rights, we need to make restrictions that forbid anyone to pierre@0: deny you these rights or to ask you to surrender the rights. These restrictions pierre@0: translate to certain responsibilities for you if you distribute copies of the pierre@0: software, or if you modify it. pierre@0: pierre@0: For example, if you distribute copies of such a program, whether gratis or for pierre@0: a fee, you must give the recipients all the rights that you have. You must make pierre@0: sure that they, too, receive or can get the source code. And you must show pierre@0: them these terms so they know their rights. pierre@0: pierre@0: We protect your rights with two steps: (1) copyright the software, and (2) pierre@0: offer you this license which gives you legal permission to copy, distribute pierre@0: and/or modify the software. pierre@0: pierre@0: Also, for each author's protection and ours, we want to make certain that pierre@0: everyone understands that there is no warranty for this free software. If the pierre@0: software is modified by someone else and passed on, we want its recipients pierre@0: to know that what they have is not the original, so that any problems pierre@0: introduced by others will not reflect on the original authors' reputations. pierre@0: pierre@0: Finally, any free program is threatened constantly by software patents. We pierre@0: wish to avoid the danger that redistributors of a free program will individually pierre@0: obtain patent licenses, in effect making the program proprietary. To prevent pierre@0: this, we have made it clear that any patent must be licensed for everyone's pierre@0: free use or not licensed at all. pierre@0: pierre@0: The precise terms and conditions for copying, distribution and modification pierre@0: follow. pierre@0: pierre@0: GNU GENERAL PUBLIC LICENSE pierre@0: TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND pierre@0: MODIFICATION pierre@0: pierre@0: 0. This License applies to any program or other work which contains a notice pierre@0: placed by the copyright holder saying it may be distributed under the terms pierre@0: of this General Public License. The "Program", below, refers to any such pierre@0: program or work, and a "work based on the Program" means either the pierre@0: Program or any derivative work under copyright law: that is to say, a work pierre@0: containing the Program or a portion of it, either verbatim or with pierre@0: modifications and/or translated into another language. (Hereinafter, translation pierre@0: is included without limitation in the term "modification".) Each licensee is pierre@0: addressed as "you". pierre@0: pierre@0: Activities other than copying, distribution and modification are not covered pierre@0: by this License; they are outside its scope. The act of running the Program is pierre@0: not restricted, and the output from the Program is covered only if its contents pierre@0: constitute a work based on the Program (independent of having been made pierre@0: by running the Program). Whether that is true depends on what the Program pierre@0: does. pierre@0: pierre@0: 1. You may copy and distribute verbatim copies of the Program's source pierre@0: code as you receive it, in any medium, provided that you conspicuously and pierre@0: appropriately publish on each copy an appropriate copyright notice and pierre@0: disclaimer of warranty; keep intact all the notices that refer to this License pierre@0: and to the absence of any warranty; and give any other recipients of the pierre@0: Program a copy of this License along with the Program. pierre@0: pierre@0: You may charge a fee for the physical act of transferring a copy, and you pierre@0: may at your option offer warranty protection in exchange for a fee. pierre@0: pierre@0: 2. You may modify your copy or copies of the Program or any portion of it, pierre@0: thus forming a work based on the Program, and copy and distribute such pierre@0: modifications or work under the terms of Section 1 above, provided that you pierre@0: also meet all of these conditions: pierre@0: pierre@0: a) You must cause the modified files to carry prominent notices stating that pierre@0: you changed the files and the date of any change. pierre@0: pierre@0: b) You must cause any work that you distribute or publish, that in whole or in pierre@0: part contains or is derived from the Program or any part thereof, to be pierre@0: licensed as a whole at no charge to all third parties under the terms of this pierre@0: License. pierre@0: pierre@0: c) If the modified program normally reads commands interactively when run, pierre@0: you must cause it, when started running for such interactive use in the most pierre@0: ordinary way, to print or display an announcement including an appropriate pierre@0: copyright notice and a notice that there is no warranty (or else, saying that pierre@0: you provide a warranty) and that users may redistribute the program under pierre@0: these conditions, and telling the user how to view a copy of this License. pierre@0: (Exception: if the Program itself is interactive but does not normally print such pierre@0: an announcement, your work based on the Program is not required to print pierre@0: an announcement.) pierre@0: pierre@0: These requirements apply to the modified work as a whole. If identifiable pierre@0: sections of that work are not derived from the Program, and can be pierre@0: reasonably considered independent and separate works in themselves, then pierre@0: this License, and its terms, do not apply to those sections when you distribute pierre@0: them as separate works. But when you distribute the same sections as part pierre@0: of a whole which is a work based on the Program, the distribution of the pierre@0: whole must be on the terms of this License, whose permissions for other pierre@0: licensees extend to the entire whole, and thus to each and every part pierre@0: regardless of who wrote it. pierre@0: pierre@0: Thus, it is not the intent of this section to claim rights or contest your rights to pierre@0: work written entirely by you; rather, the intent is to exercise the right to pierre@0: control the distribution of derivative or collective works based on the pierre@0: Program. pierre@0: pierre@0: In addition, mere aggregation of another work not based on the Program pierre@0: with the Program (or with a work based on the Program) on a volume of a pierre@0: storage or distribution medium does not bring the other work under the scope pierre@0: of this License. pierre@0: pierre@0: 3. You may copy and distribute the Program (or a work based on it, under pierre@0: Section 2) in object code or executable form under the terms of Sections 1 pierre@0: and 2 above provided that you also do one of the following: pierre@0: pierre@0: a) Accompany it with the complete corresponding machine-readable source pierre@0: code, which must be distributed under the terms of Sections 1 and 2 above pierre@0: on a medium customarily used for software interchange; or, pierre@0: pierre@0: b) Accompany it with a written offer, valid for at least three years, to give pierre@0: any third party, for a charge no more than your cost of physically performing pierre@0: source distribution, a complete machine-readable copy of the corresponding pierre@0: source code, to be distributed under the terms of Sections 1 and 2 above on pierre@0: a medium customarily used for software interchange; or, pierre@0: pierre@0: c) Accompany it with the information you received as to the offer to distribute pierre@0: corresponding source code. (This alternative is allowed only for pierre@0: noncommercial distribution and only if you received the program in object pierre@0: code or executable form with such an offer, in accord with Subsection b pierre@0: above.) pierre@0: pierre@0: The source code for a work means the preferred form of the work for pierre@0: making modifications to it. For an executable work, complete source code pierre@0: means all the source code for all modules it contains, plus any associated pierre@0: interface definition files, plus the scripts used to control compilation and pierre@0: installation of the executable. However, as a special exception, the source pierre@0: code distributed need not include anything that is normally distributed (in pierre@0: either source or binary form) with the major components (compiler, kernel, pierre@0: and so on) of the operating system on which the executable runs, unless that pierre@0: component itself accompanies the executable. pierre@0: pierre@0: If distribution of executable or object code is made by offering access to pierre@0: copy from a designated place, then offering equivalent access to copy the pierre@0: source code from the same place counts as distribution of the source code, pierre@0: even though third parties are not compelled to copy the source along with the pierre@0: object code. pierre@0: pierre@0: 4. You may not copy, modify, sublicense, or distribute the Program except as pierre@0: expressly provided under this License. Any attempt otherwise to copy, pierre@0: modify, sublicense or distribute the Program is void, and will automatically pierre@0: terminate your rights under this License. However, parties who have received pierre@0: copies, or rights, from you under this License will not have their licenses pierre@0: terminated so long as such parties remain in full compliance. pierre@0: pierre@0: 5. You are not required to accept this License, since you have not signed it. pierre@0: However, nothing else grants you permission to modify or distribute the pierre@0: Program or its derivative works. These actions are prohibited by law if you pierre@0: do not accept this License. Therefore, by modifying or distributing the pierre@0: Program (or any work based on the Program), you indicate your acceptance pierre@0: of this License to do so, and all its terms and conditions for copying, pierre@0: distributing or modifying the Program or works based on it. pierre@0: pierre@0: 6. Each time you redistribute the Program (or any work based on the pierre@0: Program), the recipient automatically receives a license from the original pierre@0: licensor to copy, distribute or modify the Program subject to these terms and pierre@0: conditions. You may not impose any further restrictions on the recipients' pierre@0: exercise of the rights granted herein. You are not responsible for enforcing pierre@0: compliance by third parties to this License. pierre@0: pierre@0: 7. If, as a consequence of a court judgment or allegation of patent pierre@0: infringement or for any other reason (not limited to patent issues), conditions pierre@0: are imposed on you (whether by court order, agreement or otherwise) that pierre@0: contradict the conditions of this License, they do not excuse you from the pierre@0: conditions of this License. If you cannot distribute so as to satisfy pierre@0: simultaneously your obligations under this License and any other pertinent pierre@0: obligations, then as a consequence you may not distribute the Program at all. pierre@0: For example, if a patent license would not permit royalty-free redistribution pierre@0: of the Program by all those who receive copies directly or indirectly through pierre@0: you, then the only way you could satisfy both it and this License would be to pierre@0: refrain entirely from distribution of the Program. pierre@0: pierre@0: If any portion of this section is held invalid or unenforceable under any pierre@0: particular circumstance, the balance of the section is intended to apply and pierre@0: the section as a whole is intended to apply in other circumstances. pierre@0: pierre@0: It is not the purpose of this section to induce you to infringe any patents or pierre@0: other property right claims or to contest validity of any such claims; this pierre@0: section has the sole purpose of protecting the integrity of the free software pierre@0: distribution system, which is implemented by public license practices. Many pierre@0: people have made generous contributions to the wide range of software pierre@0: distributed through that system in reliance on consistent application of that pierre@0: system; it is up to the author/donor to decide if he or she is willing to pierre@0: distribute software through any other system and a licensee cannot impose pierre@0: that choice. pierre@0: pierre@0: This section is intended to make thoroughly clear what is believed to be a pierre@0: consequence of the rest of this License. pierre@0: pierre@0: 8. If the distribution and/or use of the Program is restricted in certain pierre@0: countries either by patents or by copyrighted interfaces, the original copyright pierre@0: holder who places the Program under this License may add an explicit pierre@0: geographical distribution limitation excluding those countries, so that pierre@0: distribution is permitted only in or among countries not thus excluded. In such pierre@0: case, this License incorporates the limitation as if written in the body of this pierre@0: License. pierre@0: pierre@0: 9. The Free Software Foundation may publish revised and/or new versions pierre@0: of the General Public License from time to time. Such new versions will be pierre@0: similar in spirit to the present version, but may differ in detail to address new pierre@0: problems or concerns. pierre@0: pierre@0: Each version is given a distinguishing version number. If the Program specifies pierre@0: a version number of this License which applies to it and "any later version", pierre@0: you have the option of following the terms and conditions either of that pierre@0: version or of any later version published by the Free Software Foundation. If pierre@0: the Program does not specify a version number of this License, you may pierre@0: choose any version ever published by the Free Software Foundation. pierre@0: pierre@0: 10. If you wish to incorporate parts of the Program into other free programs pierre@0: whose distribution conditions are different, write to the author to ask for pierre@0: permission. For software which is copyrighted by the Free Software pierre@0: Foundation, write to the Free Software Foundation; we sometimes make pierre@0: exceptions for this. Our decision will be guided by the two goals of pierre@0: preserving the free status of all derivatives of our free software and of pierre@0: promoting the sharing and reuse of software generally. pierre@0: pierre@0: NO WARRANTY pierre@0: pierre@0: 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, pierre@0: THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT pierre@0: PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE pierre@0: STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR pierre@0: OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT pierre@0: WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, pierre@0: INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES pierre@0: OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR pierre@0: PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND pierre@0: PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE pierre@0: PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL pierre@0: NECESSARY SERVICING, REPAIR OR CORRECTION. pierre@0: pierre@0: 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR pierre@0: AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR pierre@0: ANY OTHER PARTY WHO MAY MODIFY AND/OR pierre@0: REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE pierre@0: LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, pierre@0: SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES pierre@0: ARISING OUT OF THE USE OR INABILITY TO USE THE pierre@0: PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA pierre@0: OR DATA BEING RENDERED INACCURATE OR LOSSES pierre@0: SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE pierre@0: PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN pierre@0: IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF pierre@0: THE POSSIBILITY OF SUCH DAMAGES. pierre@0: pierre@0: END OF TERMS AND CONDITIONS