[gtkmm] Created tag 3.8.0

[Murray Cumming <murrayc src gnome org>]

The unsigned tag '3.8.0' was created.

Tagger: Murray Cumming <murrayc murrayc com>
Date: Wed Apr 17 11:11:52 2013 +0200

    3.8.0

Changes since the last tag '3.7.12':

Chun-wei Fan (2):
      Fix and Update Visual Studio Projects
      Update the Visual Studio Solution Files

Murray Cumming (16):
      AccelLabel: Add set_accel().
      ActionGroup: Add get/set_accel_group().
      IconView: Add get/set_activate_on_single_click().
      Window: Add set_titlebar().
      Gdk::Window: Add get/set_fullscreen_mode().
      Gtk::Entry: Add the populate_all property.
      Gtk::LevelBar: Add get/set_inverted().
      Gtk::TextView: Add the populate_all property.
      Gtk::MenuShell: Add bind_model().
      Gtk::TreeView: Add get/set_activate_on_single_click().
      Gtk::Image: Add the resource property.
      Gtk::Settings: Add two new setings.
      Gtk::IconInfo: Add async methods.
      Update the generated GTK+ documentation.
      Widget: Add some new methods.
      3.8.0