                           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.

                                     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
