GNU GENERAL PUBLIC LICENSE
                       Version 3, 29 June 2007

 Copyright (C) 2007 Free Software Foundation, Inc.
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.

                            Preamble

  The GNU General Public License is a free, copyleft license for
software and other kinds of works.

  The licenses for most software and other practical works are designed
to take away your freedom to share and change the works. By contrast,
the GNU General Public License is intended to guarantee your freedom to
share and change all versions of a program — to make sure it remains
free software for all its users.

  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
them 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 prevent others from denying you
these rights or asking you to surrender the rights. Therefore, you have
certain responsibilities if you distribute copies of the software, or if
you modify it: responsibilities to respect the freedom of others.

  For example, if you distribute copies of such a program, whether
gratis or for a fee, you must pass on to the recipients the same freedoms
that you received. 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.

  Developers that use the GNU GPL protect your rights with two steps:
(1) assert copyright on the software, and (2) offer you this License
giving you legal permission to copy, distribute and/or modify it.

  For the developers' and authors' protection, the GPL clearly explains
that there is no warranty for this free software. For both users' and
authors' sake, the GPL requires that modified versions be marked as
changed, so that their problems will not be attributed erroneously to
authors of previous versions.

  Some devices are designed to deny users access to install or run
modified versions of the software inside them, although the manufacturer
can do so. This is fundamentally incompatible with the aim of protecting
users' freedom to change the software. The systematic pattern of such
abuse occurs in the area of products for individuals to use, which is
precisely where this kind of abuse is most serious. Therefore, we have
designed this version of the GPL to prohibit the relevant practices for
those products. If such problems arise substantially in other domains,
we stand ready to extend this provision to those domains in future
versions of the GPL, as needed to protect the freedom of users.

  Finally, every program is threatened constantly by software patents.
States should not allow patents to restrict development and use of
software on general-purpose computers, but in those that do, we wish to
avoid the special danger that patents applied to a free program could
make it effectively proprietary. To prevent this, the GPL assures that
patents cannot be used to render the program non-free.

  The precise terms and conditions for copying, distribution and
modification follow.

                       TERMS AND CONDITIONS

  0. Definitions.

  “This License” refers to version 3 of the GNU General Public License.

  “Copyright” also means copyright-like laws that apply to other kinds of
works, such as semiconductor masks.

  “The Program” refers to any copyrightable work licensed under this
License. Each licensee is addressed as “you”. “Licensees” and “recipients”
may be individuals or organizations.

  To “modify” a work means to copy from or adapt all or part of the work
in a fashion requiring copyright permission, other than the making of an
exact copy. The resulting work is called a “modified version” of the earlier
work or a work “based on” the earlier work.

  A “covered work” means either the unmodified Program or a work based
on the Program.

  To “propagate” a work means to do anything with it that, without
permission, would make you directly or secondarily liable for infringement
under applicable copyright law, except executing it on a computer or
modifying a private copy. Propagation includes copying, distribution,
with or without modification, and in some countries other activities as well.

  To “convey” a work means any kind of propagation that enables other
parties to make or receive copies. Mere interaction with a user through a
computer network, with no transfer of a copy, is not conveying.

  An “interactive user interface” displays “Appropriate Legal Notices” to
the extent that it includes a convenient and prominently visible feature
that (1) displays an appropriate copyright notice, and (2) tells the user
that there is no warranty for the work, except to the extent that warranties
are provided, and that users may redistribute the work under these license
terms, and tells the user how to view a copy of this License. If the
interface presents a list of user commands or options, such as a menu, a
prominent item in the list meets this criterion.

  1. Source Code.

  The “source code” for a work means the preferred form of the work for
making modifications to it. The “object code” means any non-source form of
the work.

  A “Standard Interface” means an interface that either is an official
standard defined by a recognized standards body, or, in the case of interfaces
specified for a particular programming language, one that is widely used among
developers working in that language.

  “Corresponding Source” for a work in object code form means all the
source code needed to generate, install, and run the object code, including
scripts used to control those activities. It does not include the work’s
System Libraries, or general-purpose tools or generally available free programs
which are used unmodified in performing those activities but which are not part
of the work. For example, Corresponding Source includes interface definition
files associated with the work, and the source code for shared libraries and
subprograms that the work is specifically designed to require, such as by
intimate data communication or control flow between those subprograms and other
parts of the work.

  The Corresponding Source need not include anything that users can regenerate
automatically from other parts of the Corresponding Source.

  The Corresponding Source for a work in source code form is that same work.

  2. Basic Permissions.

  All rights granted under this License are granted for the term of copyright
on the Program, and are irrevocable provided the stated conditions are met. This
License explicitly affirms your unlimited permission to run the unmodified Program.
The output from running a covered work is covered by this License only if the
output, given its content, constitutes a covered work. This License acknowledges
your rights of fair use or other equivalent, as provided by copyright law.

  You may make, run and propagate covered works that you do not convey,
without conditions so long as your license otherwise remains in force. You may
convey covered works to others for the sole purpose of having them make
modifications exclusively for you, provided that you comply with the terms of
this License in conveying all material for which you do not control copyright. Those
thus making the modifications must make their modified versions available to you,
under these same terms.

  Conveying under any other circumstances is permitted solely under the conditions
stated below. Sublicensing is not allowed; section 10 makes it unnecessary.

  3. Protecting Users' Legal Rights From Anti-Circumvention Law.

  No covered work shall be deemed part of an effective technological measure
under any applicable law fulfilling obligations under article 11 of the WIPO
copyright treaty or similar laws prohibiting or restricting circumvention of such
measures.

  When you convey a covered work, you waive any legal power to forbid circumvention
of technological features to the extent such circumvention is effected by exercising
rights under this License with respect to the covered work.

  4. Conveying Verbatim Copies.

  You may convey 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; keep intact all notices stating that this License
and any non-permissive terms added in accord with section 7 apply to the code; keep
intact all notices of the absence of any warranty; and give all recipients a copy
of this License along with the Program.

  You may charge any price or no price for each copy that you convey, and you may
offer support or warranty protection for a fee.

  5. Conveying Modified Source Versions.

  You may convey a work based on the Program, or the modifications to produce it
from the Program, in the form of source code under the terms of section 4, provided
that you also meet all of these conditions:

  a) The work must carry prominent notices stating that you modified it, and giving
a relevant date.

  b) The work must carry prominent notices stating that it is released under this
License and any conditions added under section 7. This requirement modifies the
requirement in section 4 to “keep intact all notices”.

  c) The entire work is licensed under this License, in its entirety, to any person
who comes into possession of a copy. This License must not be used to restrict licensing
of the work separately.

  d) If the work has interactive user interfaces, each must display Appropriate Legal
Notices; however, if the Program does not interact with users, this requirement does
not apply.

  These requirements apply to the combined work as a whole. If identifiable sections
of that work are derived from the Program, and can be reasonably considered independent
and separate works, then this License does not apply to those sections when you convey
them separately. But when you convey those same sections as part of a whole whose work
is based on the Program, the whole must be under this License, whose permissions for other
licensees extend to the entire whole.

  6. Conveying Non-Source Forms.

  You may convey a covered work in object code form under the terms of sections 4
and 5, provided that you also convey the machine-readable Corresponding Source under
the terms of this License, in one of these ways:

  a) Convey the object code in, or embodied in, a physical product (including a
physical distribution medium), accompanied by the Corresponding Source fixed on a durable
physical medium customarily used for software interchange.

  b) Convey the object code in, or embodied in, a physical product, accompanied by a
written offer, valid for at least three years and valid for as long as you offer spare
parts or customer support for that product model, to give anyone who possesses the object
code either (1) a copy of the Corresponding Source for all the software in the product
that is covered by this License, on a durable physical medium customarily used for software
interchange, for a price no more than your reasonable cost of physically performing this
conveying of source, or (2) access to copy the Corresponding Source from a designated
place.

  c) Convey individual copies of the object code with a copy of the written offer to
provide the Corresponding Source. This alternative is allowed only occasionally and noncommercially,
and only if you received the object code with such an offer, in accord with subsection 6b.

  d) Convey the object code by offering access from a designated place, for no charge.
You need not require recipients to copy the Corresponding Source along with the object code.
If the place to copy the object code is a network server, the Corresponding Source may be on a different server, operated by you or a third party, provided that you maintain clear instructions beside the object code telling people where to find it.

  e) Convey the object code using peer-to-peer transmission, provided you inform other
peers where the object code and Corresponding Source for the work are being offered to the
general public at no charge.

  A “User Product” is either (1) a “consumer product”, which means any tangible personal
property normally used for personal, family, or household purposes, or (2) anything designed
or sold for incorporation into a dwelling. In determining whether a product is a consumer
product, doubtful cases shall be resolved in favor of coverage. For a particular product
received by a particular user, “normally used” refers to a typical or common use of that
class of product, regardless of the particular user’s actual use.

  “Installation Information” for a User Product means any methods, procedures, authorization
keys, or other information required to install and execute modified versions of a covered work
in that User Product from a modified version of its Corresponding Source. The information must
suffice to ensure that the continued operation of that modified version does not merely continue
to operate if the installation was performed, but also that the modified work functions in all
important respects in the same way as the original version.

  When you convey an object code work under this section, you must also convey any required
Installation Information, but only to the extent that such information is necessary to install and
execute modified versions of the covered work in that User Product. If no such information is required,
you need not convey any.

  7. Additional Terms.

  “Additional permissions” are terms that supplement the terms of this License by making
exceptions from one or more of its conditions. These additional permissions are treated as part of
this License, but only for the work to which they are applied.

  If the Program specifies that a certain numbered version of the GNU General Public License “or
any later version” applies to it, you have the option of following either that numbered version or
any later version published by the Free Software Foundation. If the Program does not specify a version
number of the GNU General Public License, you may choose any version ever published by the Free
Software Foundation.

  If the Program specifies that a proxy can decide whether future versions of the GNU General Public
License shall apply, that proxy’s public acceptance of a version permanently authorizes you to choose
that version for the Program.

  Later license versions may give you additional or different permissions. However, no additional
obligations are imposed on any licensee solely because you have chosen to follow a later version.

  When you convey a copy of a covered work, you may at your option remove any additional permissions
from that copy, provided that you also remove, where applicable, any warranty disclaimer and any
reference to a place where users can get a copy of the Corresponding Source.

  8. Termination.

  You may not propagate or modify a covered work except as expressly provided under this License.
Any attempt otherwise to propagate or modify it is void, and will automatically terminate your rights
under this License.

  However, if you cease all violation of this License, then your license from a particular copyright
holder is reinstated provisionally, unless the copyright holder expressly and finally terminates your license.

  If your license is terminated, you must stop using and distributing all copies of the covered work. You may also be required to provide copies of the Corresponding Source and other relevant information.

  9. Acceptance Not Required for Having Copies.

  You are not required to accept this License in order to receive or run a copy of the Program. Mere propagation of a work under this License does not imply acceptance of the License.

  10. Automatic Licensing of Downstream Recipients.

  Each time you convey a covered work, the recipient automatically receives a license from the original licensors, to run, modify and propagate that work, subject to this License. You are not responsible for enforcing compliance by third parties with this License.

  11. Patents.

  A “contributor” is a copyright holder who authorizes use under this License of the Program or a work on which the Program is based. The work thus licensed is called the contributor’s “contributor version”.

  A contributor’s “essential patent claims” are all patent claims owned or controlled by the contributor, whether already acquired or hereafter acquired, that would be infringed by some manner, permitted by this License, of making, using, selling, offering for sale, importing, or otherwise transferring its contributor version.

  If you convey a covered work, you knowingly rely on a patent license, and the Corresponding Source of the work is not available for anyone to copy, then you must either (1) make the Corresponding Source available, or (2) arrange to deprive yourself of the benefit of the patent license for this particular conveyance, or (3) arrange, in a legally enforceable way, to make the Corresponding Source not subject to this License for that conveyance.

  “Knowingly relying” means you have actual knowledge that, but for the patent license, your conveying the covered work, in the circumstances, would infringe a patent claim of the contributor version.

  If, pursuant to or in connection with a single transaction or arrangement, you convey, or procure the conveyance of, a covered work and also grant a patent license to some of the parties receiving the covered work, then the patent license you grant is automatically extended to all recipients of the covered work and works based on the covered work.

  No patent license is granted under this License if the conveyance of the covered work does not occur under this License.

  Nothing in this section shall be construed as excluding or limiting any rights you may have under applicable patent law.

  12. No Surrender of Others' Freedom.

  If a condition of this License requires you to surrender or restrict rights of others, then that condition is void. If the Program is covered by a valid patent license, you may not convey it in a way that would directly or indirectly require recipients to pay a royalty or other fee for exercising rights granted under this License.

  If a court judgment or settlement requires you to convey a covered work in a way that violates this License, then you may not convey it at all.

  13. Use with the GNU Affero General Public License.

  Notwithstanding anything to the contrary in this License, if you modify a covered work and convey it through a network interaction with users, then the Corresponding Source of the modified work must be made available to the public, under the terms of this License, if the work is designed for remote interaction.

  14. Revised Versions of This License.

  The Free Software Foundation may publish revised and/or new versions of the GNU 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 that a certain version of the GNU General Public License “or any later version” applies to it, you have the option of following either that version or any later version published by the Free Software Foundation. If the Program does not specify a version number, you may choose any version ever published by the Free Software Foundation.

  If the Program specifies that a proxy can decide whether future versions of the GNU General Public License shall apply, that proxy’s public acceptance of a version permanently authorizes you to choose that version for the Program.

  Later license versions may give you additional or different permissions. However, no additional obligations are imposed on any licensee solely because you have chosen to follow a later version.

  15. Disclaimer of Warranty.

  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.

  16. Limitation of Liability.

  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 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, EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

  17. Interpretation of Sections 15 and 16.

  If the disclaimer of warranty and limitation of liability provided above cannot be given local legal effect according to their terms, reviewing courts shall apply local law that most closely approximates an absolute waiver of all civil liability in connection with the Program, unless a warranty or assumption of liability accompanies a copy of the Program in exchange for a fee.

                     END OF TERMS AND CONDITIONS