VertexDecoder JIT: Add the last missing ones except morph, I think.
ARM optimization in ADDI2R: Dual adds instead of MOVI2R, ADD when possible
Minor optimization in IndexGenerator::AddStrip.
Add an optimization to discard registers at the end of functions when possible.

Works in some games but crashes many so hiding it for now. Do not add UI.
ARMjit: Optimize mfc1, mtc1
ARMjit: Optimize mfv, mtv
Reset cycle counter when stepping out
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.