
                                       GNU GENERAL PUBLIC LICENSE
                                           Version 2, June 1991 

                  Copyright (C) 1989, 1991 Free Software Foundation, Inc.
                  675 Mass Ave, Cambridge, MA 02139, USA
                  Everyone is permitted to copy and distribute verbatim copies of this license document, but
                  changing it is not allowed. 

                  The precise terms and conditions for copying, distribution and modification follow. 
                       GNU GENERAL PUBLIC LICENSE 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 the Program or any derivative work under copyright law: that is to say,
                  a 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 covered by this License;
                  they are outside its scope. The act of running 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 interactive but does not normally print such an announcement, your work
                      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 this License, and its terms, do not apply to those sections
                  when you distribute them as separate works. But when you distribute the same sections as
                  part of a whole which is a work based on the Program, the distribution of the whole must be on
                  the terms of this License, whose permissions for other licensees extend to the entire whole,
                  and thus to each and every part regardless of who wrote it. Thus, it is not the intent of this
                  section to claim rights or contest your rights to work written entirely by you; rather, the intent is
                  to exercise the right to control the distribution of derivative or collective works based on the
                  Program. 

                  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 storage or distribution medium does not
                  bring the other work under the scope of this License. 

                  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
                      code, which must be distributed under the terms of Sections 1 and 2 above on a
                      medium customarily used for software interchange; or, 

                      b) Accompany it with a written offer, valid for at least three years, to give any third
                      party, for a charge no more than your cost of physically performing source
                      distribution, a complete machine-readable copy of the corresponding source
                      code, to be distributed under the terms of Sections 1 and 2 above on a medium
                      customarily used for software interchange; or, 

                      c) Accompany it with the information you received as to the offer to distribute
                      corresponding source code. (This alternative is allowed only for noncommercial
                      distribution and only if you received the program in object code or executable
                      form with such an offer, in accord with Subsection b above.) 

                  The source code for a work means the preferred form of the work for making modifications to it.
                  For an executable work, complete source code means all the source code for all modules it
                  contains, plus any associated interface definition files, plus the scripts used to control
                  compilation and installation of the executable. However, as a special exception, the source
                  code distributed need not include anything that is normally distributed (in either source or
                  binary form) with the major components (compiler, kernel, and so on) of the operating system
                  on which the executable runs, unless that component itself accompanies the executable. 

                  If distribution of executable or object code is made by offering access to copy from a
                  designated place, then offering equivalent access to copy the source code from the same
                  place counts as distribution of the source code, even though third parties are not compelled
                  to copy the source along with the object code. 

                  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 who have received copies, or rights, from you under this License will not have their
                  licenses terminated so long as such parties remain in full compliance. 

                  5. You are not required to accept this License, since you have not signed it. However, nothing
                  else grants you permission to modify or distribute the Program or its derivative works. These
                  actions are prohibited by law if you do not accept this License. Therefore, by modifying or
                  distributing the Program (or any work based on the Program), you indicate your acceptance of
                  this License to do so, and all its terms and conditions for copying, distributing or modifying the
                  Program or works based on it. 

                  6. Each time you redistribute the Program (or any work based on the Program), the recipient
                  automatically receives a license from the original 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 for enforcing
                  compliance by third parties to this License. 

                  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 otherwise) that contradict the conditions of this License, they do not excuse you
                  from the conditions of this License. If you cannot distribute so as to satisfy simultaneously
                  your obligations under this License and any other pertinent obligations, then as a
                  consequence you may not distribute the Program at all. For example, if a patent license would
                  not permit royalty-free redistribution of the Program by all those who receive copies directly or
                  indirectly through you, then the only way you could satisfy both it and this License would be to
                  refrain entirely from distribution of the Program. 

                  If any portion of this section is held invalid or unenforceable under any particular
                  circumstance, the balance of the section is intended to apply and the section as a whole is
                  intended to apply in other circumstances. 

                  It is not the purpose of this section to induce you to infringe any patents or other property right
                  claims or to contest validity of any such claims; this section has the sole purpose of
                  protecting the integrity of the free software distribution system, which is implemented by public
                  license practices. Many people have made generous contributions to the wide range of
                  software distributed through that system in reliance on consistent application of that system; it
                  is up to the author/donor to decide if he or she is willing to distribute software through any
                  other system and a licensee cannot impose that choice. 

                  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 Software Foundation, write to the Free Software Foundation; we
                  sometimes make exceptions for this. Our decision will be guided by the two goals of
                  preserving the free status of all derivatives of our free software and of promoting the sharing
                  and reuse of software generally. 
                                             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. 
