GNU LESSER GENERAL PUBLIC LICENSE

Version 3, 29 June 2007

Copyright (C) 2007 Free Software Foundation, Inc. <http s ://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:

         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.

         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.
