Comments in m3u format are read into entries

[atillakati]

If you try to create a m3u playlist with comments (eg: #PLAYLIST-Author:Gandalf), the comments are read and stored into entries and not into playlist.Comments.
A side effect of this issue is, that if you save a playlist with no entries as a m3u file, the comments will not be read, 'cause there are no entries in the playlist.