* components/music/nautilus-music-view.c:
	(nautilus_music_view_initialize), (get_song_text), (sort_list),
	(click_column_callback), (ensure_uri_is_image),
	(nautilus_music_view_update): A bunch of code cleanup; stop using
	hidden columns in the list view and try to pave the way for better
	model/view separation.

	* src/nautilus-main.c (main): set DISPLAY variable to
	canonicalized version; this is needed to make