Log Message:
faudio: Update to 20.11

New Features:

    XACT:
        Add support for WAVESTOP notifications
        Add support for engines without settings files (or empty settings files)

Fixes:

    Add power-of-two quantum fallback paths for *BSD and Emscripten
    Return a unique error code for audio engines with a bad platform ID
    Fix a deadlock in Wolfenstein: The Old Blood related to callbacks
    Fix a crash for streaming WaveBanks when calling Destroy
    stb_vorbis: Handle malloc(0) calls