Bug 941877 - IonMonkey: Extend MMod and MDiv to be full replacements for MAsmJSUMod and MAsmJSUDiv. r=nbp
Bug 942236 - IonMonkey: Unsigned optimizations for MMod, MDiv, and MUrsh. r=nbp

fixme: nbp wants the bailoutsDisabled_ setting in a collectRangeInfo(), but
       dtc-moz is renaming that to collectRangeInfoPreTrunc()
Bug 942258 - SpiderMonkey: Don't create an LDivSelf when the division can't divide by zero. r=bhackett