[gtkmm] Created tag 3.5.12

[Murray Cumming <murrayc src gnome org>]

The unsigned tag '3.5.12' was created.

Tagger: Murray Cumming <murrayc murrayc com>
Date: Fri Aug 31 00:33:48 2012 +0200

    3.5.12

Changes since the last tag '3.5.6':

Kjell Ahlstedt (1):
      Application: Don't call add_window() before the application is registered.

Murray Cumming (15):
      Settings: Deprecate the gtk-touchscreen-property.
      Correct the ChangeLog
      Show get_type() in the API documentation.
      Entry: Add input purpose and input hints methods.
      Application: Add get_active_window().
      MenuButton: Added get/set_popup(), deprecated get/set_menu().
      Regenerate properties and signals defs for GTK+.
      Add some _IGNORES
      TextView: Add input purpose and input hints methods.
      Widget: Add insert_action_group().
      Fix typo to fix the build.
      Fix tiny docs typo.
      CellRendererText: Add the placeholder_text property.
      Add LevelBar.
      3.5.12