Bug 876701 - Static analysis failure in nsMathMLsemanticsFrame.h, r=karlt
Bug 873012 - In case we use overlay scrollbars, and we run on system 10.8 or later, make them overlap in the bottom right corner, r=smichaud

--HG--
extra : rebase_source : 300f78c1230a6f91a102c032b026b1fe2455f634
Bug 873010 - Artifacts around small overlay scrollbars in select boxes, r=mstange
Bug 873010 - Artifacts around small overlay scrollbars in select boxes, r=mstange

--HG--
extra : rebase_source : 002fdce7f49d852e567438481609be58dd76bcc4