* ./modules/audio_output/esd.c: we now properly use the esd_get_latency()

  * ./modules/audio_output/esd.c: we now properly use the esd_get_latency()
    return value to avoid audio starvation.
  * ./modules/audio_filter/converter/*: a little loop optimization trick.
  * ./src/audio_output/aout_ext-dec.c: removed this deprecated file.