[gtkmm] Created tag 3.0.0

[Murray Cumming <murrayc src gnome org>]

The unsigned tag '3.0.0' was created.

Tagger: Murray Cumming <murrayc murrayc com>
Date: Wed Apr 6 13:09:53 2011 +0200

    3.0.0

Changes since the last tag '2.99.8':

Kalev Lember (2):
      MenuShell: Removed documentation references about Menu_Helpers::MenuElem
      Wrap a missing flag in GtkStateFlags

Murray Cumming (10):
      Improve ChangeLog
      Replace all operator bool() with operator void*().
      Change all operator void* to operator const void*.
      Gdk::Screen: Avoid an unnecessary gmmproc warning.
      Gtk::NumerableIcon: Really add get_background_gicon() const.
      Widget: Remove the extension-event property.
      Remove RecentInfo::operator const void*.
      Use a BoolExpr typedef to make operator const void* clearer.
      operator const void*(): Use GINT_TO_POINTER().
      3.0.0