Applied the logic from r6691 to the LLE dec/add/sub functions so they work without ToMask. This should give a modest speedup for these.
Pierre's AR inc was already perfect and I only adjusted its logic a bit for visual consistency between the interpreter and JIT code.
Also applied Pierre's optimization from the LLE inc to the Int inc.
git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@6707 8ced0084-cf51-0410-be5f-012b33b47a6e