Opcode Replay and Timewarp: Fix "Synchronize GPU Thread = True" Audio.
OpenAL works with Framelimiter = 60 or 75, XAudio only with Framelimiter set to 60.  Smash Bros for GC and Wii are now both completely playable with Opcode Replay with GPU Sync enabled.
Opcode Replay Buffer: Unwind Screen Clear Draw Calls.
The "Clear Frame" for the beginning of each frame actually happens at the end of the real/opcode replay frame. This causes the call meant for the next real frame to be used for the replay frame.  This logs the clear draw calls then plays them back on the replay frame in the correct order.
Merge branch 'VR-Hydra' of https://github.com/cegli/dolphin into VR-Hydra

Conflicts:
	Source/Core/VideoCommon/VR.cpp