COPYING

This software is licenced under the GNU GENERAL PUBLIC LICENCE Version
2. Except that any software in the lib/ directory is for the creation of a
linkable library to the tools and is licensed under the GNU LESSER GENERAL
PUBLIC LICENCE Version 2.1.  Contributing Authors agree that their code is
submitted under the licence appropriate for its location within the source
tree (GPL except for LGPL in lib/) and agree that any future patches, provided
they are accepted into the project, may change the licence of their code from
GPL to LGPL by moving pieces of it into lib/ or LGPL to GPL by moving pieces
of it out of lib/

Note that the only valid version of the GPL is THIS particular version
of the license (ie v2, not v2.2 or v3.x or whatever), unless explicitly
otherwise stated.