Fix more getters and a few typos
New widget : TreeSelection
Add function in relation with TreeSelection
Update to last rust compiler version
Change static GFALSE and GTRUE to const, working again when matching on it
Replace all 0i32 match by GFALSE
Merge pull request #95 from GuillaumeGomez/master

A lot of changes
Merge remote-tracking branch 'upstream/master' into getters2
Add ImageView methods for replacing the image
Merge pull request #94 from oakes/getters2

Fix more getters and a few typos
Merge pull request #96 from gekola/master

Add ImageView methods for replacing the image
Merge remote-tracking branch 'upstream/master'

Conflicts:
	gtk_glue/gtk_glue.c
	src/gtk/cast.rs
	src/gtk/ffi.rs
	src/gtk/widgets/mod.rs
	src/gtk/widgets/treeview.rs
	src/gtk/widgets/treeview_column.rs