fix incorrect use of mov(reg1,reg2) to mr(reg1,reg2)
Add xoris, andis. Replace ARM eor with PPC xor.
Convert CompileMathAbsCall for PPC.
StoreNumberToDoubleElements (macro-assembler-*.cc) doesn't account for endianess.
(PPC seems to be the only platform building big-endian to get this weeded out.)
Properly simulate and disassemble frim instruction.
Fix instances of and. to properly check condition bits.
Printout opcode of instrs. w/ unknown format during disassembling