Log Message:
Update to 1.103:

Overview of changes in Glib 1.103
=================================

* Fix a crash that occured when properties of undead objects were modified.
  [muppet]
* Fix the undead object macros to work on 64-bit platforms.  [Rafael
  Garcia-Suarez]
* Completely redo the way GObject types are mapped to package names. This
  fixes the problem uncovered by the recent GInitiallyUnowned issue.
* Allow undef for some arguments in the Glib::KeyFile API.  [Emmanuele]