Log Message:
musicpd: update to 0.22.9.

ver 0.22.9 (2021/06/23)
* database
  - simple: load all .mpdignore files of all parent directories
* tags
  - fix "readcomments" and "readpicture" on remote files \ 
with ID3 tags
* decoder
  - ffmpeg: support the tags "sort_album", "album-sort", \ 
"artist-sort"
  - ffmpeg: fix build failure with FFmpeg 3.4
* Android
  - fix auto-start on boot in Android 8 or later
* Windows
  - fix build failure with SQLite