Overview of Changes from gnome-python 2.12.1 to gnome-python 2.12.2
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* gnomecanvas
 - Fix crash in gnomecanvas.Item.grab (Xavier Ordoquy, Gustavo)
* gnome.ui
 - Make 'custom_icon' arg of icon_lookup optional (Gustavo)
* python gnomevfs methods
 - Fix handling of VFS errors from python vfs methods (Eitan Isaacson)