GNU LESSER GENERAL PUBLIC LICENSE

Version 3, 29 June 2007

Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>

Everyone is permitted to copy and distribute verbatim copies of this license
document, but changing it is not allowed.

This version of the GNU Lesser General Public License incorporates the terms
and conditions of version 3 of the GNU General Public License, supplemented by
the additional permissions listed below.
0. Additional Definitions.

As used herein, “this License” refers to version 3 of the GNU Lesser General
Public License, and the “GNU GPL” refers to version 3 of the GNU General Public
License.

“The Library” refers to a covered work governed by this License, other than an
Application or a Combined Work as defined below.

An “Application” is any work that makes use of an interface provided by the
Library, but which is not otherwise based on the Library. Defining a subclass
of a class defined by the Library is deemed a mode of using an interface
provided by the Library.

A “Combined Work” is a work produced by combining or linking an Application
with the Library. The particular version of the Library with which the Combined
Work was made is also called the “Linked Version”.

The “Minimal Corresponding Source” for a Combined Work means the Corresponding
Source for the Combined Work, excluding any source code for portions of the
Combined Work that, considered in isolation, are based on the Application, and
not on the Linked Version.

The “Corresponding Application Code” for a Combined Work means the object code
and/or source code for the Application, including any data and utility programs
needed for reproducing the Combined Work from the Application, but excluding
the System Libraries of the Combined Work.
1. Exception to Section 3 of the GNU GPL.

You may convey a covered work under sections 3 and 4 of this License without
being bound by section 3 of the GNU GPL.
2. Conveying Modified Versions.

If you modify a copy of the Library, and, in your modifications, a facility
refers to a function or data to be supplied by an Application that uses the
facility (other than as an argument passed when the facility is invoked), then
you may convey a copy of the modified version:

    * a) under this License, provided that you make a good faith effort to
         ensure that, in the event an Application does not supply the function
         or data, the facility still operates, and performs whatever part of
         its purpose remains meaningful, or
    * b) under the GNU GPL, with none of the additional permissions of this
         License applicable to that copy.

3. Object Code Incorporating Material from Library Header Files.

The object code form of an Application may incorporate material from a header
file that is part of the Library. You may convey such object code under terms
of your choice, provided that, if the incorporated material is not limited to
numerical parameters, data structure layouts and accessors, or small macros,
inline functions and templates (ten or fewer lines in length), you do both of
the following:

    * a) Give prominent notice with each copy of the object code that the
         Library is used in it and that the Library and its use are covered by
         this License.
    * b) Accompany the object code with a copy of the GNU GPL and this license
         document.

4. Combined Works.

You may convey a Combined Work under terms of your choice that, taken together,
effectively do not restrict modification of the portions of the Library
contained in the Combined Work and reverse engineering for debugging such
modifications, if you also do each of the following:

    * a) Give prominent notice with each copy of the Combined Work that the
         Library is used in it and that the Library and its use are covered by
         this License.
    * b) Accompany the Combined Work with a copy of the GNU GPL and this
         license document.
    * c) For a Combined Work that displays copyright notices during execution,
         include the copyright notice for the Library among these notices, as
         well as a reference directing the user to the copies of the GNU GPL
         and this license document.
    * d) Do one of the following:
          o 0) Convey the Minimal Corresponding Source under the terms of this
               License, and the Corresponding Application Code in a form
               suitable for, and under terms that permit, the user to recombine
               or relink the Application with a modified version of the Linked
               Version to produce a modified Combined Work, in the manner
               specified by section 6 of the GNU GPL for conveying
               Corresponding Source.
          o 1) Use a suitable shared library mechanism for linking with the
               Library. A suitable mechanism is one that (a) uses at run time a
               copy of the Library already present on the user's computer
               system, and (b) will operate properly with a modified version of
               the Library that is interface-compatible with the Linked Version.
    * e) Provide Installation Information, but only if you would otherwise be
         required to provide such information under section 6 of the GNU GPL,
         and only to the extent that such information is necessary to install
         and execute a modified version of the Combined Work produced by
         recombining or relinking the Application with a modified version of the
         Linked Version. (If you use option 4d0, the Installation Information
         must accompany the Minimal Corresponding Source and Corresponding
         Application Code. If you use option 4d1, you must provide the
         Installation Information in the manner specified by section 6 of the
         GNU GPL for conveying Corresponding Source.)

5. Combined Libraries.

You may place library facilities that are a work based on the Library side by
side in a single library together with other library facilities that are not
Applications and are not covered by this License, and convey such a combined
library under terms of your choice, if you do both of the following:

    * a) Accompany the combined library with a copy of the same work based on
         the Library, uncombined with any other library facilities, conveyed
         under the terms of this License.
    * b) Give prominent notice with the combined library that part of it is a
         work based on the Library, and explaining where to find the
         accompanying uncombined form of the same work.

6. Revised Versions of the GNU Lesser General Public License.

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

If the Library as you received it specifies that a proxy can decide whether
future versions of the GNU Lesser General Public License shall apply, that
proxy's public statement of acceptance of any version is permanent
authorization for you to choose that version for the Library.