[gtkmm] Created tag 3.4.0

[Murray Cumming <murrayc src gnome org>]

The unsigned tag '3.4.0' was created.

Tagger: Murray Cumming <murrayc murrayc com>
Date: Tue Apr 10 15:25:42 2012 +0200

    3.4.0

Changes since the last tag '3.3.20':

Adrian Bunk (2):
      Update .gitignore.
      Remove the Maemo Extensions API

Kjell Ahlstedt (1):
      TreePath: All constructors guarantee that gobject_ != 0.

Mark Vender (1):
      Gtk::Widget: add documentation for the destructor.

Murray Cumming (5):
      Regenerate the .defs files.
      Gtk::Window: Add begin/move_resize_drag() overloads that take a Device.
      CellArea: Add some signals.
      Gtk::Widget: Slight improvement of text in previous commit.
      3.4.0