2006-10-02  Jonathan Matthew  <jonathan@kaolin.wh9.net>

	* rhythmdb/rhythmdb.c: (rhythmdb_register_core_entry_types),
	(rhythmdb_entry_podcast_post_get_type):
	* rhythmdb/rhythmdb.h:
	* tests/bench-rhythmdb-load.c: (main):
	Add definitions for some common extra-metadata fields,
	remove iradio entry type definition, add the concept of entry type
	categories, define categories for the core entry types.
	Categories are used to decide if an entry can be copied to a removable
	device, if it should be reported to audioscrobbler, etc.

	* shell/Makefile.am:
	* shell/rb-shell-player.c: (rb_shell_player_class_init),
	(rb_shell_player_constructor), (rb_shell_player_init),
	(rb_shell_player_get_property), (open_location_thread),
	(rb_shell_player_open_location),
	(rb_shell_player_sync_with_source),
	(rb_shell_player_set_playing_source_internal), (tick_cb):
	* shell/rb-shell.c: (construct_widgets), (construct_sources),
	(rb_shell_player_elaps...