Bug 1046964 - Delete the "missing return statement" warning (r=Waldo)
Bug 1025445 - Propagate MFloor truncation upward. r=nbp, r=sunfish
Bug 1025445 - Optimize x86 visitFloor using RangeAnalysis. r=nbp, r=sunfish
Backed out changesets 37df1d58af4a and 792b068b7805 (bug 1025445) for Gaia unit test failures.
Merge b2g-inbound to m-c. a=merge