Log Message:
Update to 3.8.0:

3.8.0 (stable):

Changes since 3.7.12:

Gtk:
* AccelLabel: Add set_accel().
  (Murray Cumming)
* ActionGroup: Add get/set_accel_group()
  and the accel-group property.
  (Murray Cumming)
* Entry: Add the populate_all property.
  (Murray Cumming)
* Image: Add the resource property.
  (Murray Cumming)
* IconInfo: Add load_icon_async(),
  load_symbolic_async(), load_symbolic_for_context().
  (Murray Cumming)
* IconView:
  - Add get/set_activate_on_single_click().
  and the activate-on-single-click property.
  - Add get_cell_rect().
  (Murray Cumming)  
* LevelBar: Add get/set_inverted().
  (Murray Cumming)
* MenuShell: Add bind_model().
  (Murray Cumming)
* Settings: Add the  gtk-recent-files-enabled
  and gtk-primary-button-warps-slider
  properties.
  (Murray Cumming)
* TextView: Add the populate_all property.
  (Murray Cumming)
* TreeView: Add get/set_activate_on_single_click()
  and the activate-on-single-click property.
  (Murray Cumming
* Widget: Add is_visible(), register_window() and
  unregister_window().
  (Murray Cumming)
* Window: Add set_titlebar().
  (Murray Cumming)

Gdk:
* Window: Add get/set_fullscreen_mode().
  (Murray Cumming)

Build:
* Fix and Update the Visual Studio Solution Files
  for MSVC.Net 2005, 2008 and 2010.
  (Chun-wei Fan)