[gtkmm] Created tag 2.20.3

[Murray Cumming <murrayc src gnome org>]

The unsigned tag '2.20.3' was created.

Tagger: Murray Cumming <murrayc murrayc com>
Date: Tue May 4 13:36:19 2010 +0200

    2.20.3

Changes since the last tag '2.20.2':

David King (3):
      Add main page to Doxygen documentation
      Improvements to main page documentation
      Link change in main page documentation

Murray Cumming (5):
      Minor main page changes.
      Fix typo.
      Fix typo.
      FileChooser::get_filter(): Don't ref the result.
      2.20.3

Shaun McCance (1):
      [gtkmm.doap] Fixed invalid multiple objects on RDF properties