Revision 2091

* libraries/thuban/wxproj.cpp (get_wx_version): New.  Return the
version of wxWindows the module was compiled with so we can check
that against the wxPython version.

* Thuban/version.py (thuban_branch, thuban_release): New variables
controlling which and how Thuban versions are shown.  See the
comments for details.
(verify_versions): Also check that the wx version that wxproj is
compiled against matches that of the wxPython we use at runtime