Add curlies around DISABLE/CONDITIONAL_DISABLE.
Keep track of VFPU prefixes and flush them in jit.
Minor cleanup for vdot in x86 jit.
Initial implementation of jit vadd/vsub/vdiv/vmul.
Forget cached prefixes when calling generic.

It may eat them, or maybe always does?
Don't flush all regs in mfvc, just prefixes.
Merge pull request #700 from unknownbrackets/jit-vfpu

Flush vfpu prefixes, initial implementation of VecDo3