Log Message:
Update to 2.28.6:

2.28.6 11-Jun-1011
        - closure: avoid double free crash (Ignacio Casal Quinteiro)
        - [gi] backport of "GVariant has a GType" fe386a (John (J5) \ 
Palmieri)
        - [gi] fixes to backport commit 6b5a65 - in older glib GVariants are \ 
still structs (John (J5) Palmieri)
        - GVariantType is a boxed struct (Tomeu Vizoso)
        - Use _gi.Struct to wrap fundamentals (Tomeu Vizoso)
        - Added __eq__ method for Gdk.Color and Gdk.RGBA (Jason Siefken)
        - Remove useless import (Ignacio Casal Quinteiro)
        - Revert "[gi] Removed hack to avoid using \ 
GLib.Variant.new_variant." (Ignacio Casal Quinteiro)
        - closure: Check the out arg is not null. Fixes bug #651812 (Ignacio \ 
Casal Quinteiro)
        - Fix GC-related crash during PyGObject deallocation (Daniel Drake)
        - Fix symbol names to be locale independent (Martin Pitt)
        - Updated DOAP file (Sebastian Pölsterl)