Implement Comp_VV2Op vfpu ops in the x86 jit.

Also, some cleanup.  No need for this extra boilerplate, simplify...

This makes the Bink video issue slightly better, in jit only.
Fix typo, should definitely be VX().
Oops, correct the bounds check.
Drop the sign in vsqrt, but not vrsq.
Tweak and note vsat0/vsat1 NaN handling.
Jit vzero/vone, which are easy and common (x86.)
Initial (very inefficient) vmmov for x86 jit.

This makes #464 work (at least LittleBigPlanet), but only in x86 jit.
Divide from -1.0 directly in x86 jit vnrcp.
Merge pull request #736 from unknownbrackets/jit-vfpu

Add more vfpu x86 jitting + somehow fix video issue