-                    GNU GENERAL PUBLIC LICENSE
 -                       Version 2, June 1991
 -
 - Copyright (C) 1989, 1991 Free Software Foundation, Inc., <http://fsf.org/>
 - 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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 Lesser 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.
 -
 -    {description}
 -    Copyright (C) {year}  {fullname}
 -
 -    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.,
 -    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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) year 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 Lesser General
 -Public License instead of this License.
 -