codewriter: Fix spacing for property accessor attributes
girparser: Add type_id metadata
girparser: Shut unused destroys_instance warning
clutter-1.0: Update to 1.17.2
gstreamer-1.0: Fix ElementFactory.get_static_pad_templates return type

Fixes bug 720694
girparser: Shut warning about unused experimental metadata
gtk+-3.0: Update to (nearly) 3.11.6
gdk-3.0: Fix GdkEvent* bindings

GdkEvent structs have hidden fields and must be exposed as compact
classes.

Fixes bug 713240.
Release 0.23.2