Fix encoding issue with VADD(Integer)
On ARM Hosts, increase the instruction run count to 64bit. 32bit is /very/ quickly overflown.
[ARM] Implement mfmsr
[ARM] Implement MFTB
[ARM] Disable mfmsr. Implement stb and subfx.
[ARM] Implement xorx
Add Read_F32 and Read_F64 helper functions to MemmapFunctions.
[ARM] Implement LFD. Reorder VFP register allocation a bit.
[ARM] Reenable FMRX, it seems to work fine.