b8f1b8
                    GNU GENERAL PUBLIC LICENSE
b8f1b8
                       Version 2, June 1991
b8f1b8
b8f1b8
 Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
b8f1b8
 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
b8f1b8
 Everyone is permitted to copy and distribute verbatim copies
b8f1b8
 of this license document, but changing it is not allowed.
b8f1b8
b8f1b8
                            Preamble
b8f1b8
b8f1b8
  The licenses for most software are designed to take away your
b8f1b8
freedom to share and change it.  By contrast, the GNU General Public
b8f1b8
License is intended to guarantee your freedom to share and change free
b8f1b8
software--to make sure the software is free for all its users.  This
b8f1b8
General Public License applies to most of the Free Software
b8f1b8
Foundation's software and to any other program whose authors commit to
b8f1b8
using it.  (Some other Free Software Foundation software is covered by
b8f1b8
the GNU Lesser General Public License instead.)  You can apply it to
b8f1b8
your programs, too.
b8f1b8
b8f1b8
  When we speak of free software, we are referring to freedom, not
b8f1b8
price.  Our General Public Licenses are designed to make sure that you
b8f1b8
have the freedom to distribute copies of free software (and charge for
b8f1b8
this service if you wish), that you receive source code or can get it
b8f1b8
if you want it, that you can change the software or use pieces of it
b8f1b8
in new free programs; and that you know you can do these things.
b8f1b8
b8f1b8
  To protect your rights, we need to make restrictions that forbid
b8f1b8
anyone to deny you these rights or to ask you to surrender the rights.
b8f1b8
These restrictions translate to certain responsibilities for you if you
b8f1b8
distribute copies of the software, or if you modify it.
b8f1b8
b8f1b8
  For example, if you distribute copies of such a program, whether
b8f1b8
gratis or for a fee, you must give the recipients all the rights that
b8f1b8
you have.  You must make sure that they, too, receive or can get the
b8f1b8
source code.  And you must show them these terms so they know their
b8f1b8
rights.
b8f1b8
b8f1b8
  We protect your rights with two steps: (1) copyright the software, and
b8f1b8
(2) offer you this license which gives you legal permission to copy,
b8f1b8
distribute and/or modify the software.
b8f1b8
b8f1b8
  Also, for each author's protection and ours, we want to make certain
b8f1b8
that everyone understands that there is no warranty for this free
b8f1b8
software.  If the software is modified by someone else and passed on, we
b8f1b8
want its recipients to know that what they have is not the original, so
b8f1b8
that any problems introduced by others will not reflect on the original
b8f1b8
authors' reputations.
b8f1b8
b8f1b8
  Finally, any free program is threatened constantly by software
b8f1b8
patents.  We wish to avoid the danger that redistributors of a free
b8f1b8
program will individually obtain patent licenses, in effect making the
b8f1b8
program proprietary.  To prevent this, we have made it clear that any
b8f1b8
patent must be licensed for everyone's free use or not licensed at all.
b8f1b8
b8f1b8
  The precise terms and conditions for copying, distribution and
b8f1b8
modification follow.
b8f1b8
b8f1b8
                    GNU GENERAL PUBLIC LICENSE
b8f1b8
   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
b8f1b8
b8f1b8
  0. This License applies to any program or other work which contains
b8f1b8
a notice placed by the copyright holder saying it may be distributed
b8f1b8
under the terms of this General Public License.  The "Program", below,
b8f1b8
refers to any such program or work, and a "work based on the Program"
b8f1b8
means either the Program or any derivative work under copyright law:
b8f1b8
that is to say, a work containing the Program or a portion of it,
b8f1b8
either verbatim or with modifications and/or translated into another
b8f1b8
language.  (Hereinafter, translation is included without limitation in
b8f1b8
the term "modification".)  Each licensee is addressed as "you".
b8f1b8
b8f1b8
Activities other than copying, distribution and modification are not
b8f1b8
covered by this License; they are outside its scope.  The act of
b8f1b8
running the Program is not restricted, and the output from the Program
b8f1b8
is covered only if its contents constitute a work based on the
b8f1b8
Program (independent of having been made by running the Program).
b8f1b8
Whether that is true depends on what the Program does.
b8f1b8
b8f1b8
  1. You may copy and distribute verbatim copies of the Program's
b8f1b8
source code as you receive it, in any medium, provided that you
b8f1b8
conspicuously and appropriately publish on each copy an appropriate
b8f1b8
copyright notice and disclaimer of warranty; keep intact all the
b8f1b8
notices that refer to this License and to the absence of any warranty;
b8f1b8
and give any other recipients of the Program a copy of this License
b8f1b8
along with the Program.
b8f1b8
b8f1b8
You may charge a fee for the physical act of transferring a copy, and
b8f1b8
you may at your option offer warranty protection in exchange for a fee.
b8f1b8
b8f1b8
  2. You may modify your copy or copies of the Program or any portion
b8f1b8
of it, thus forming a work based on the Program, and copy and
b8f1b8
distribute such modifications or work under the terms of Section 1
b8f1b8
above, provided that you also meet all of these conditions:
b8f1b8
b8f1b8
    a) You must cause the modified files to carry prominent notices
b8f1b8
    stating that you changed the files and the date of any change.
b8f1b8
b8f1b8
    b) You must cause any work that you distribute or publish, that in
b8f1b8
    whole or in part contains or is derived from the Program or any
b8f1b8
    part thereof, to be licensed as a whole at no charge to all third
b8f1b8
    parties under the terms of this License.
b8f1b8
b8f1b8
    c) If the modified program normally reads commands interactively
b8f1b8
    when run, you must cause it, when started running for such
b8f1b8
    interactive use in the most ordinary way, to print or display an
b8f1b8
    announcement including an appropriate copyright notice and a
b8f1b8
    notice that there is no warranty (or else, saying that you provide
b8f1b8
    a warranty) and that users may redistribute the program under
b8f1b8
    these conditions, and telling the user how to view a copy of this
b8f1b8
    License.  (Exception: if the Program itself is interactive but
b8f1b8
    does not normally print such an announcement, your work based on
b8f1b8
    the Program is not required to print an announcement.)
b8f1b8
b8f1b8
These requirements apply to the modified work as a whole.  If
b8f1b8
identifiable sections of that work are not derived from the Program,
b8f1b8
and can be reasonably considered independent and separate works in
b8f1b8
themselves, then this License, and its terms, do not apply to those
b8f1b8
sections when you distribute them as separate works.  But when you
b8f1b8
distribute the same sections as part of a whole which is a work based
b8f1b8
on the Program, the distribution of the whole must be on the terms of
b8f1b8
this License, whose permissions for other licensees extend to the
b8f1b8
entire whole, and thus to each and every part regardless of who wrote it.
b8f1b8
b8f1b8
Thus, it is not the intent of this section to claim rights or contest
b8f1b8
your rights to work written entirely by you; rather, the intent is to
b8f1b8
exercise the right to control the distribution of derivative or
b8f1b8
collective works based on the Program.
b8f1b8
b8f1b8
In addition, mere aggregation of another work not based on the Program
b8f1b8
with the Program (or with a work based on the Program) on a volume of
b8f1b8
a storage or distribution medium does not bring the other work under
b8f1b8
the scope of this License.
b8f1b8
b8f1b8
  3. You may copy and distribute the Program (or a work based on it,
b8f1b8
under Section 2) in object code or executable form under the terms of
b8f1b8
Sections 1 and 2 above provided that you also do one of the following:
b8f1b8
b8f1b8
    a) Accompany it with the complete corresponding machine-readable
b8f1b8
    source code, which must be distributed under the terms of Sections
b8f1b8
    1 and 2 above on a medium customarily used for software interchange; or,
b8f1b8
b8f1b8
    b) Accompany it with a written offer, valid for at least three
b8f1b8
    years, to give any third party, for a charge no more than your
b8f1b8
    cost of physically performing source distribution, a complete
b8f1b8
    machine-readable copy of the corresponding source code, to be
b8f1b8
    distributed under the terms of Sections 1 and 2 above on a medium
b8f1b8
    customarily used for software interchange; or,
b8f1b8
b8f1b8
    c) Accompany it with the information you received as to the offer
b8f1b8
    to distribute corresponding source code.  (This alternative is
b8f1b8
    allowed only for noncommercial distribution and only if you
b8f1b8
    received the program in object code or executable form with such
b8f1b8
    an offer, in accord with Subsection b above.)
b8f1b8
b8f1b8
The source code for a work means the preferred form of the work for
b8f1b8
making modifications to it.  For an executable work, complete source
b8f1b8
code means all the source code for all modules it contains, plus any
b8f1b8
associated interface definition files, plus the scripts used to
b8f1b8
control compilation and installation of the executable.  However, as a
b8f1b8
special exception, the source code distributed need not include
b8f1b8
anything that is normally distributed (in either source or binary
b8f1b8
form) with the major components (compiler, kernel, and so on) of the
b8f1b8
operating system on which the executable runs, unless that component
b8f1b8
itself accompanies the executable.
b8f1b8
b8f1b8
If distribution of executable or object code is made by offering
b8f1b8
access to copy from a designated place, then offering equivalent
b8f1b8
access to copy the source code from the same place counts as
b8f1b8
distribution of the source code, even though third parties are not
b8f1b8
compelled to copy the source along with the object code.
b8f1b8
b8f1b8
  4. You may not copy, modify, sublicense, or distribute the Program
b8f1b8
except as expressly provided under this License.  Any attempt
b8f1b8
otherwise to copy, modify, sublicense or distribute the Program is
b8f1b8
void, and will automatically terminate your rights under this License.
b8f1b8
However, parties who have received copies, or rights, from you under
b8f1b8
this License will not have their licenses terminated so long as such
b8f1b8
parties remain in full compliance.
b8f1b8
b8f1b8
  5. You are not required to accept this License, since you have not
b8f1b8
signed it.  However, nothing else grants you permission to modify or
b8f1b8
distribute the Program or its derivative works.  These actions are
b8f1b8
prohibited by law if you do not accept this License.  Therefore, by
b8f1b8
modifying or distributing the Program (or any work based on the
b8f1b8
Program), you indicate your acceptance of this License to do so, and
b8f1b8
all its terms and conditions for copying, distributing or modifying
b8f1b8
the Program or works based on it.
b8f1b8
b8f1b8
  6. Each time you redistribute the Program (or any work based on the
b8f1b8
Program), the recipient automatically receives a license from the
b8f1b8
original licensor to copy, distribute or modify the Program subject to
b8f1b8
these terms and conditions.  You may not impose any further
b8f1b8
restrictions on the recipients' exercise of the rights granted herein.
b8f1b8
You are not responsible for enforcing compliance by third parties to
b8f1b8
this License.
b8f1b8
b8f1b8
  7. If, as a consequence of a court judgment or allegation of patent
b8f1b8
infringement or for any other reason (not limited to patent issues),
b8f1b8
conditions are imposed on you (whether by court order, agreement or
b8f1b8
otherwise) that contradict the conditions of this License, they do not
b8f1b8
excuse you from the conditions of this License.  If you cannot
b8f1b8
distribute so as to satisfy simultaneously your obligations under this
b8f1b8
License and any other pertinent obligations, then as a consequence you
b8f1b8
may not distribute the Program at all.  For example, if a patent
b8f1b8
license would not permit royalty-free redistribution of the Program by
b8f1b8
all those who receive copies directly or indirectly through you, then
b8f1b8
the only way you could satisfy both it and this License would be to
b8f1b8
refrain entirely from distribution of the Program.
b8f1b8
b8f1b8
If any portion of this section is held invalid or unenforceable under
b8f1b8
any particular circumstance, the balance of the section is intended to
b8f1b8
apply and the section as a whole is intended to apply in other
b8f1b8
circumstances.
b8f1b8
b8f1b8
It is not the purpose of this section to induce you to infringe any
b8f1b8
patents or other property right claims or to contest validity of any
b8f1b8
such claims; this section has the sole purpose of protecting the
b8f1b8
integrity of the free software distribution system, which is
b8f1b8
implemented by public license practices.  Many people have made
b8f1b8
generous contributions to the wide range of software distributed
b8f1b8
through that system in reliance on consistent application of that
b8f1b8
system; it is up to the author/donor to decide if he or she is willing
b8f1b8
to distribute software through any other system and a licensee cannot
b8f1b8
impose that choice.
b8f1b8
b8f1b8
This section is intended to make thoroughly clear what is believed to
b8f1b8
be a consequence of the rest of this License.
b8f1b8
b8f1b8
  8. If the distribution and/or use of the Program is restricted in
b8f1b8
certain countries either by patents or by copyrighted interfaces, the
b8f1b8
original copyright holder who places the Program under this License
b8f1b8
may add an explicit geographical distribution limitation excluding
b8f1b8
those countries, so that distribution is permitted only in or among
b8f1b8
countries not thus excluded.  In such case, this License incorporates
b8f1b8
the limitation as if written in the body of this License.
b8f1b8
b8f1b8
  9. The Free Software Foundation may publish revised and/or new versions
b8f1b8
of the General Public License from time to time.  Such new versions will
b8f1b8
be similar in spirit to the present version, but may differ in detail to
b8f1b8
address new problems or concerns.
b8f1b8
b8f1b8
Each version is given a distinguishing version number.  If the Program
b8f1b8
specifies a version number of this License which applies to it and "any
b8f1b8
later version", you have the option of following the terms and conditions
b8f1b8
either of that version or of any later version published by the Free
b8f1b8
Software Foundation.  If the Program does not specify a version number of
b8f1b8
this License, you may choose any version ever published by the Free Software
b8f1b8
Foundation.
b8f1b8
b8f1b8
  10. If you wish to incorporate parts of the Program into other free
b8f1b8
programs whose distribution conditions are different, write to the author
b8f1b8
to ask for permission.  For software which is copyrighted by the Free
b8f1b8
Software Foundation, write to the Free Software Foundation; we sometimes
b8f1b8
make exceptions for this.  Our decision will be guided by the two goals
b8f1b8
of preserving the free status of all derivatives of our free software and
b8f1b8
of promoting the sharing and reuse of software generally.
b8f1b8
b8f1b8
                            NO WARRANTY
b8f1b8
b8f1b8
  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
b8f1b8
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
b8f1b8
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
b8f1b8
PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
b8f1b8
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
b8f1b8
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
b8f1b8
TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
b8f1b8
PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
b8f1b8
REPAIR OR CORRECTION.
b8f1b8
b8f1b8
  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
b8f1b8
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
b8f1b8
REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
b8f1b8
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
b8f1b8
OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
b8f1b8
TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
b8f1b8
YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
b8f1b8
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
b8f1b8
POSSIBILITY OF SUCH DAMAGES.
b8f1b8
b8f1b8
                     END OF TERMS AND CONDITIONS
b8f1b8
b8f1b8
            How to Apply These Terms to Your New Programs
b8f1b8
b8f1b8
  If you develop a new program, and you want it to be of the greatest
b8f1b8
possible use to the public, the best way to achieve this is to make it
b8f1b8
free software which everyone can redistribute and change under these terms.
b8f1b8
b8f1b8
  To do so, attach the following notices to the program.  It is safest
b8f1b8
to attach them to the start of each source file to most effectively
b8f1b8
convey the exclusion of warranty; and each file should have at least
b8f1b8
the "copyright" line and a pointer to where the full notice is found.
b8f1b8
b8f1b8
    <one line to give the program's name and a brief idea of what it does.>
b8f1b8
    Copyright (C) <year>  <name of author>
b8f1b8
b8f1b8
    This program is free software; you can redistribute it and/or modify
b8f1b8
    it under the terms of the GNU General Public License as published by
b8f1b8
    the Free Software Foundation; either version 2 of the License, or
b8f1b8
    (at your option) any later version.
b8f1b8
b8f1b8
    This program is distributed in the hope that it will be useful,
b8f1b8
    but WITHOUT ANY WARRANTY; without even the implied warranty of
b8f1b8
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
b8f1b8
    GNU General Public License for more details.
b8f1b8
b8f1b8
    You should have received a copy of the GNU General Public License along
b8f1b8
    with this program; if not, write to the Free Software Foundation, Inc.,
b8f1b8
    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
b8f1b8
b8f1b8
Also add information on how to contact you by electronic and paper mail.
b8f1b8
b8f1b8
If the program is interactive, make it output a short notice like this
b8f1b8
when it starts in an interactive mode:
b8f1b8
b8f1b8
    Gnomovision version 69, Copyright (C) year name of author
b8f1b8
    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
b8f1b8
    This is free software, and you are welcome to redistribute it
b8f1b8
    under certain conditions; type `show c' for details.
b8f1b8
b8f1b8
The hypothetical commands `show w' and `show c' should show the appropriate
b8f1b8
parts of the General Public License.  Of course, the commands you use may
b8f1b8
be called something other than `show w' and `show c'; they could even be
b8f1b8
mouse-clicks or menu items--whatever suits your program.
b8f1b8
b8f1b8
You should also get your employer (if you work as a programmer) or your
b8f1b8
school, if any, to sign a "copyright disclaimer" for the program, if
b8f1b8
necessary.  Here is a sample; alter the names:
b8f1b8
b8f1b8
  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
b8f1b8
  `Gnomovision' (which makes passes at compilers) written by James Hacker.
b8f1b8
b8f1b8
  <signature of Ty Coon>, 1 April 1989
b8f1b8
  Ty Coon, President of Vice
b8f1b8
b8f1b8
This General Public License does not permit incorporating your program into
b8f1b8
proprietary programs.  If your program is a subroutine library, you may
b8f1b8
consider it more useful to permit linking proprietary applications with the
b8f1b8
library.  If this is what you want to do, use the GNU Lesser General
b8f1b8
Public License instead of this License.