Bug 981553 - Remove JitCompartment::rt. r=nbp

--HG--
extra : rebase_source : f67e0f35f7f050baa3a9d2520bd22f0760d4b36b
Bug 981554 - Move allocator for optimized Baseline stubs from JitCompartment to JitZone. r=njn

--HG--
extra : rebase_source : 609881b6cf783805333454b876797ad5235bfecc