Bug 910807 - IonMonkey: Add "range" to IONFLAGS=help. r=nbp
Bug 910807 - IonMonkey: Avoid rectifyExponent() calls in unionWith, since it isn't needed, and the invariants it checks are temporarily invalid. r=nbp
Bug 910807 - IonMonkey: Remove Beta's val_ member, which was redundant with getOperand(0), and was suboptimal when the operand is replaced with another beta. r=nbp