            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 the software is modified by someone else and passed on, we 
 want its recipients to know that what they have is not the original, so 
 that any problems introduced by others will not reflect on the original 
 authors' reputations.

 Finally, any free program is threatened constantly by software patents. 
 We wish to avoid the danger that redistributors of a free program will 
 individually obtain patent licenses, in effect making the program 
 proprietary. To prevent this, we have made it clear that any patent 
 must 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 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.

            END OF TERMS AND CONDITIONS