105_old_gc_ignore_destroyed_drawable_events.patch (revert),
106_old_gc_fix_use_after_free.patch (revert),
107_old_gc_drop_broken_drawable_garbage_collector.patch (revert):
These three related patches introduced a new garbage collector, however
this introduces a regression causing clutter/mutter/unity to load with
a blank white screen.  Revert these three patches to restore mesa to
a working condition for unity.
(LP: #638808, #638725)