Log Message:
musicpd: update to 0.20.16.

ver 0.20.16 (2018/02/03)
* output
  - pulse: fix crash during auto-detection
* database
  - simple: fix search within mount points
  - upnp: enable IPv6
* archive
  - iso9660: libcdio 2.0 compatibility
* fix crash in debug build on Haiku and other operating systems