Make the jit support bltzal and friends

Fixes problems with jit in games (#461.)  Android changes completely untested... if you could make sure it works, I'd appreciate it, but I think it's right.

I'm short on time so I didn't test all the crashing games yet, but this is a pretty straight-forward fix and definitely fixes at least Who's That Flying? - probably all of them.  We really ought to have tests for these branching ops in pspautotests.

-[Unknown]