2.27.5.1: (unstable):

Glib:
* RefPtr: Make it work with sorted containers.
  (David Kozub) Bug #626858
* Variant:
  - Make all he get_iter() methods const.
  - Added dictionary entry and dictionary specializations.
  - VariantContainerBase: Add a create() method from an array of variants.
  - Added tests.
  (José Alburquerque)
* gmmproc cleanup
  (José Alburquerque)
  
Gio:
* Application: Added the open signal.
  (Yannick Guesnet)
* DBusConnection: Add register/unregister_object() methods.
  (José Alburquerque) Bug #637587 (Yannick Guesnet)