[gtkmm] Created tag 2.20.1

[Murray Cumming <murrayc src gnome org>]

The unsigned tag '2.20.1' was created.

Tagger: Murray Cumming <murrayc murrayc com>
Date: Wed Apr 7 15:48:08 2010 +0200

    2.20.1

Changes since the last tag '2.20.0':

Armin Burgmeier (3):
      Update MSVC project files
      Ifdef out inclusion of files no longer installed on Windows
      Update installer files for 2.20

Murray Cumming (7):
      TreeRowReference::get_model(): Correct the reference counting.
      RecentAction: Fix the constructor that takes a RecentManager.
      Replace some @newin2p* with @newin{2,*}.
      Really fix the @newin2p* in the *_override.xml files.
      API reference documentation: Remove gobjection-introspection annotations.
      Builder: Complete the exceptions thrown documentation.
      2.20.1