                          GNU GENERAL PUBLIC LICENSE
                             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.

                          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.

                         END OF TERMS AND CONDITIONS

                How to Apply These Terms to Your New Programs

  If you develop a new program, and you want it to be of the greatest possible
use to  the public, the  best way to achieve this  is to make it free software
which everyone can redistribute and change under these terms.

  To do  so, attach the following  notices  to the program.    It is safest to
attach them to  the start of  each source file  to most effectively convey the
exclusion of warranty; and each file should have at least the "copyright" line
and a pointer to where the full notice is found.

    <one line to give the program's name and a brief idea of what it does.>
    Copyright (C) 19yy  <name of author>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA


Also add information on how to contact you by electronic and paper mail.

If the program is interactive, make it output a short notice like this when it
starts in an interactive mode:

    Gnomovision version 69, Copyright (C) 19yy name of author
    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
    This is free software, and you are welcome to redistribute it
    under certain conditions; type `show c' for details.

The hypothetical commands  `show w' and `show  c' should show  the appropriate
parts of the General  Public License.  Of course,  the commands you use may be
called something   other than  `show  w' and   `show  c'; they  could  even be
mouse-clicks or menu items--whatever suits your program.

You should  also  get your  employer  (if you work   as a programmer)  or your
school,  if any,  to   sign  a "copyright disclaimer"    for the  program,  if
necessary.  Here is a sample; alter the names:

  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
  `Gnomovision' (which makes passes at compilers) written by James Hacker.

  <signature of Ty Coon>, 1 April 1989
  Ty Coon, President of Vice

This  General Public License does not  permit  incorporating your program into
proprietary  programs.   If  your program  is  a  subroutine library,  you may
consider it  more useful to  permit linking  proprietary applications with the
library.  If this is what you  want to do, use  the GNU Library General Public
License instead of this License.
