[gtkmm] Created tag 3.3.20

[Murray Cumming <murrayc src gnome org>]

The unsigned tag '3.3.20' was created.

Tagger: Murray Cumming <murrayc murrayc com>
Date: Wed Mar 28 11:07:36 2012 +0200

    3.3.20

Changes since the last tag '3.3.18':

Albert Chin (1):
      TreeView: Work around a HP-UX aCC compiler error.

Josà Alburquerque (2):
      Actionable: Ensure virtual functions don't return freed memory.
      Actionable: Ensure all virtual functions don't return freed memory.

Kjell Ahlstedt (2):
      Gtk::Button: Deprecate the activate signal.
      Gdk::Display: Deprecate the set_double_click_[time|distance]() methods.

Murray Cumming (27):
      RGBA: set_grey(), set_grey_u(): Correct the default alpha values.
      PaperSize: Correct the PaperSizeTraits pre-declaration.
      FontChooser: Add set_filter().
      Scale: Add set/get_has_origin() and property.
      Fix some missing sentinel warnings found by clang++
      Main: Undeprecate init_gtkmm_internals().
      Tests: Fix a warning found by clang++.
      Widget: Add signal_touch_event().
      Minor regeneration of gdk enums.
      Ignore some C convenience functions.
      CellArea: Add properties.
      Gtk::Entry: Deprecate the activate signal.
      Gdk: Add AppLaunchContext.
      Gdk::Device: Add list_axes().
      Gtk::CellArea: Add foreach().
      ColorChooser: Add add_palette.
      ComboBox: Add signal_format_entry_text().
      MenuItem, MenuShell: Add signals.
      TreeView: Add get_n_columns().
      Add an _IGNORE().
      ScrolledWindow: Wrapped some new methods and a property.
      Settings: Wrap several new properties.
      Printer: Added accepts_pdf() and accepts_ps().
      Fix previous commit
      StyleContext: Added list_classes() and get_parent().
      Deprecate some API that is deprecated in the C API.
      3.3.20