Port gedit to gtksourceview-4
This ports the gedit project to using gtksourceview-4. I also included a version bump so that we don't give anyone the idea that we'd be doing this mid 3.30 cycle.
This ports the gedit project to using gtksourceview-4. I also included a version bump so that we don't give anyone the idea that we'd be doing this mid 3.30 cycle.