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      The GNU General Public License (GPL)
      Version 2, June 1991

      Copyright (C) 1989, 1991 Free Software Foundation, Inc.
      59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
      Everyone is permitted to copy and distribute verbatim copies
      of this license document, but changing it is not allowed.

      Preamble

      The licenses for most software are designed to take away your freedom to 
      share and change it. By contrast, the GNU General Public License is 
      intended to guarantee your freedom to share and change free software--to 
      make sure the software is free for all its users. This General Public 
      License applies to most of the Free Software Foundation's software and to 
      any other program whose authors commit to using it. (Some other Free 
      Software Foundation software is covered by the GNU Library General Public 
      License instead.) You can apply it to your programs, too.

      When we speak of free software, we are referring to freedom, not price. 
      Our General Public Licenses are designed to make sure that you have the 
      freedom to distribute copies of free software (and charge for this service 
      if you wish), that you receive source code or can get it if you want it, 
      that you can change the software or use pieces of it in new free programs; 
      and that you know you can do these things.

      To protect your rights, we need to make restrictions that forbid anyone to 
      deny you these rights or to ask you to surrender the rights. These 
      restrictions translate to certain responsibilities for you if you 
      distribute copies of the software, or if you modify it.

      For example, if you distribute copies of such a program, whether gratis or 
      for a fee, you must give the recipients all the rights that you have. You 
      must make sure that they, too, receive or can get the source code. And you 
      must show them these terms so they know their rights.

      We protect your rights with two steps: (1) copyright the software, and (2) 
      offer you this license which gives you legal permission to copy, 
      distribute and/or modify the software.

      Also, for each author's protection and ours, we want to make certain that 
      everyone understands that there is no warranty for this free software. If 
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      Finally, any free program is threatened constantly by software patents. We 
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      be licensed for everyone's free use or not licensed at all.

      The precise terms and conditions for copying, distribution and 
      modification follow.

      TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

      0. This License applies to any program or other work which contains a 
      notice placed by the copyright holder saying it may be distributed under 
      the terms of this General Public License. The "Program", below, refers to 
      any such program or work, and a "work based on the Program" means either 
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      work containing the Program or a portion of it, either verbatim or with 
      modifications and/or translated into another language. (Hereinafter, 
      translation is included without limitation in the term "modification".) 
      Each licensee is addressed as "you".

      Activities other than copying, distribution and modification are not 
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      the Program is not restricted, and the output from the Program is covered 
      only if its contents constitute a work based on the Program (independent 
      of having been made by running the Program). Whether that is true depends 
      on what the Program does.

      1. You may copy and distribute verbatim copies of the Program's source 
      code as you receive it, in any medium, provided that you conspicuously and 
      appropriately publish on each copy an appropriate copyright notice and 
      disclaimer of warranty; keep intact all the notices that refer to this 
      License and to the absence of any warranty; and give any other recipients 
      of the Program a copy of this License along with the Program.

      You may charge a fee for the physical act of transferring a copy, and you 
      may at your option offer warranty protection in exchange for a fee.

      2. You may modify your copy or copies of the Program or any portion of it, 
      thus forming a work based on the Program, and copy and distribute such 
      modifications or work under the terms of Section 1 above, provided that 
      you also meet all of these conditions:

        a) You must cause the modified files to carry prominent notices stating 
        that you changed the files and the date of any change.

        b) You must cause any work that you distribute or publish, that in whole 
        or in part contains or is derived from the Program or any part thereof, 
        to be licensed as a whole at no charge to all third parties under the 
        terms of this License.

        c) If the modified program normally reads commands interactively when 
        run, you must cause it, when started running for such interactive use in 
        the most ordinary way, to print or display an announcement including an 
        appropriate copyright notice and a notice that there is no warranty (or 
        else, saying that you provide a warranty) and that users may 
        redistribute the program under these conditions, and telling the user 
        how to view a copy of this License. (Exception: if the Program itself is 
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        based on the Program is not required to print an announcement.)

      These requirements apply to the modified work as a whole. If identifiable 
      sections of that work are not derived from the Program, and can be 
      reasonably considered independent and separate works in themselves, then 
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      distribute them as separate works. But when you distribute the same 
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      distribution of the whole must be on the terms of this License, whose 
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      Thus, it is not the intent of this section to claim rights or contest your 
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      In addition, mere aggregation of another work not based on the Program 
      with the Program (or with a work based on the Program) on a volume of a 
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      3. You may copy and distribute the Program (or a work based on it, under 
      Section 2) in object code or executable form under the terms of Sections 1 
      and 2 above provided that you also do one of the following:

        a) Accompany it with the complete corresponding machine-readable source 
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        b) Accompany it with a written offer, valid for at least three years, to 
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        corresponding source code, to be distributed under the terms of Sections 
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        c) Accompany it with the information you received as to the offer to 
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      4. You may not copy, modify, sublicense, or distribute the Program except 
      as expressly provided under this License. Any attempt otherwise to copy, 
      modify, sublicense or distribute the Program is void, and will 
      automatically terminate your rights under this License. However, parties 
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      5. You are not required to accept this License, since you have not signed 
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      copying, distributing or modifying the Program or works based on it.

      6. Each time you redistribute the Program (or any work based on the 
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      licensor to copy, distribute or modify the Program subject to these terms 
      and conditions. You may not impose any further restrictions on the 
      recipients' exercise of the rights granted herein. You are not responsible 
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      7. If, as a consequence of a court judgment or allegation of patent 
      infringement or for any other reason (not limited to patent issues), 
      conditions are imposed on you (whether by court order, agreement or 
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      If any portion of this section is held invalid or unenforceable under any 
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      It is not the purpose of this section to induce you to infringe any 
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      decide if he or she is willing to distribute software through any other 
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      This section is intended to make thoroughly clear what is believed to be a 
      consequence of the rest of this License.

      8. If the distribution and/or use of the Program is restricted in certain 
      countries either by patents or by copyrighted interfaces, the original 
      copyright holder who places the Program under this License may add an 
      explicit geographical distribution limitation excluding those countries, 
      so that distribution is permitted only in or among countries not thus 
      excluded. In such case, this License incorporates the limitation as if 
      written in the body of this License.

      9. The Free Software Foundation may publish revised and/or new versions of 
      the General Public License from time to time. Such new versions will be 
      similar in spirit to the present version, but may differ in detail to 
      address new problems or concerns.

      Each version is given a distinguishing version number. If the Program 
      specifies a version number of this License which applies to it and "any 
      later version", you have the option of following the terms and conditions 
      either of that version or of any later version published by the Free 
      Software Foundation. If the Program does not specify a version number of 
      this License, you may choose any version ever published by the Free 
      Software Foundation.

      10. If you wish to incorporate parts of the Program into other free 
      programs whose distribution conditions are different, write to the author 
      to ask for permission. For software which is copyrighted by the Free 
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      preserving the free status of all derivatives of our free software and of 
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      NO WARRANTY

      11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY 
      FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN 
      OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES 
      PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED 
      OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
      MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS 
      TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE 
      PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, 
      REPAIR OR CORRECTION.

      12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 
      WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR 
      REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, 
      INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES 
      ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT 
      LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES 
      SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE 
      WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN 
      ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

      END OF TERMS AND CONDITIONS