vtxdecjit: turn off excessive logging
Extract JitState into its own header (arm/x86)
Turn down some logging.
Fix vmtvc on ARM, fixing issues with our prefix check. Add some logging.

Also improve vcmp on ARM.
Vertexdecoder "double": fix for x86 and very minor optimization for arm.
Merge pull request #4478 from Kingcom/Debugger

Reset cycle counter when stepping out
When logging PRIM commands, print the prim number
vtxdec: small omission
Use GetPointerUnchecked in how, pre-checked areas.
armjit: Optimize out a few immediate logic cases.
armjit: Reverse add t0, N, t1 to preserve imm.
armjit: Optimize movz/movn with immediates.
armjit: Avoid flushing imm on add t0, imm, imm.
armjit: Preserve immediates more in nor.
armjit: Preserve imms in slt/sltu as possible.
armjit: Use a MOV for add/or with 0.

Might skip the ALU, so might be faster.
Merge pull request #4479 from unknownbrackets/perf

Small optimizations (armjit) for imms
Add comment with link to important github thread about sceSas threading
Add small ARM perf experiment. Did not help on ARMv7 so turned it off.

xsacha might want to try it on ARMv6.
This variant didn't seem to make much difference either (see prev commit)