wasapi: Remove fatal assert from unhandled IsFormatSupported error to allow fallback. (Bug950026)
opensl: Compute audio clock with improved precision.  (Bug 944132)
opensl: Get more accurate latency numbers. (Bug 940707)
opensl: Be more robust when getting the preferred sample rate.  (Bug 947431)
opensl: Refill queues before starting playback to avoid a race.  (Bug 940177)
Merge branch 'master' into lwstreams