playlist: add (proper) playlist_Pause() and playlist_Resume()
Those two functions have no effects if the playlist is stopped.
Otherwise they force the playlist to playing ("running") or paused
state respectively.
As a reminder, the existing playlist_Play() forces the playlist into
running state (unless it is empty), and playlist_Stop() forces the
playlist into stopped state (unless the input thread refuses to die).
There are no functions to force the playlist to paused state.
projects / vlc / commit