Update ppc jit
jit fixes
use _alloca
fix Jit
recompile shift left/right immediate
more jitted instructions
implement sltiu, slti is bad
Add some badly tested instruction
Almost all alu recompiled
Current issues:
	Comp_RType3(min/max): Can't select start in disgaea
	Comp_ShiftType(srl/srlv?): Crash ridge racer 2
recompile Fpu !
some new recompiled instructions
oops missed fpu reg cache
update ppc jit
more on vfpu
some fixes
enable,fixe more vfpu
more vfpu speed
more recompiled fpu (not tested)
add MFCR and MTCR
add XORI