winex11: Add X11DRV_XRender_SetDeviceClipping for syncing the clipping region with XRender pictures.

Consistently use the stateblock's contained states to determine what to
capture.

Use IWineD3DStateBlockImpl_Capture() for the initial stateblock capture
instead.

snd_pcm_drain can cause a deadlock if in the wrong state, and 
snd_pcm_drop below does the same thing.