Log Message:
musicpd: Update to 0.21.11

changes in pkgsrc:

* switch from libmad to libmpg123 for mp3 decoding.
  it's more actively maintained.
* switch from libaudiofile to libsndfile for lossless formats.
  it's more actively maintained.
* add more options, and try to clarify existing options to
  make it obvious what is being enabled.
* enable ffmpeg by default so playing m4a files works
* fix cdparanoia support

ver 0.21.11 (2019/07/03)
* input
  - tidal: deprecated because Tidal has changed the protocol
* decoder
  - wildmidi: log error if library initialization fails
* output
  - alsa: fix busy loop while draining
  - alsa: fix missing drain call
  - alsa: improve xrun-avoiding silence generator
  - alsa: log when generating silence due to slow decoder
  - alsa, osx: fix distortions with DSD_U32 and DoP on 32 bit CPUs
* protocol
  - fix "list" with multiple "group" levels