This seems less efficient overall, since we now need to take several
passes over the track database. What I've noticed is that the
single-pass option creates a lot of UI notifications that makes the gui
unresponsive for a large amount of time. Breaking this into smaller
chunks gives us a chance to handle any user actions between loading each
playlist.
Fixes#71: Initalize artist playlists with more idle tasks
Signed-off-by: Anna Schumaker <Anna@NoWheyCreamery.com>
The pl_artist_init() function is used to allocate a playlist for each
artist already in the database, and pl_artist_deinit() is then used to
free up this memory during cleanup.
Signed-off-by: Anna Schumaker <Anna@OcarinaProject.net>