Revision 19

* MANIFEST.in: Add extensions/pyprojection/LICENSE

* setup.py (thuban_bdist_rpm): New class implementing a Thuban
specific bdist_rpm command.

* Thuban/UI/main.py: Catch ImportError exceptions when importing
the locale module because it may not be available on some
installations.

* extensions/pyprojection/LICENSE: Copy of the license text in
Projection.i. Having it in a separate file makes it easier to
refer to license text in e.g. RPMs

* setup.py: use wx-config instead of wxgtk-config because it's
more generic

* setup.py (ThubanInstall.get_outputs): Add the symlink in
<prefix>/bin to the outputs
(ThubanInstall.link_file): New method to link files. We need this
because the standard copy_files refuses to link non-existing
files.
(ThubanInstall.run): Remove the leading install root from the
script filename if an install root was specified and use the new
link_file method