Bug 852802 - Add incremental needsBarrier to the runtime and check it first; r=billm
Backed out changeset 6b6a4d28e510 (bug 852802) for bustage on a CLOSED TREE.
Bug 855920 - Remove unused nsDisplayTransform ctor.  r=roc
Bug 856243 - Add missing do_QueryFrame support.  r=dholbert