Log Message:
libmpdclient: Update to 2.17

libmpdclient 2.17 (2019/12/04)
* search: add mpd_search_add_db_songs_to_playlist()
* idle: support event "partition"
* support MPD protocol 0.19
  - "listneighbors"
* support MPD protocol 0.22
  - "getfingerprint"
* support tags "MPD_TAG_LABEL", \ 
"MPD_TAG_MUSICBRAINZ_WORKID", "Grouping",
  "Work", "Conductor"
* support MPD partitions
* mpd_async_set_keepalive() returns bool
* mpd_connection_set_keepalive() returns bool
* fix build failure on Haiku