Added arm support for  LDRi12
arm test makefile updaed for clang and gcc
added cleaning to makefile
added cleaning for arm makefile
Added extra debugging and STRi12
Added STRi12
Removed unnecessary opc LDRi12
Fixed some warnings about an instruction that was commented out
Hardened up ARMIREmitter
Resolved ARMInvlSelDAG.cpp merge failures