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

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

	patch mostly by: Ed Catmur  <ed@catmur.co.uk>

	* bindings/python/rhythmdb.defs:
	* lib/rb-marshal.list:
	* rhythmdb/rhythmdb.c: (rhythmdb_class_init),
	(rhythmdb_emit_entry_deleted),
	(rhythmdb_entry_extra_metadata_accumulator),
	(rhythmdb_entry_request_extra_metadata),
	(rhythmdb_emit_entry_extra_metadata_notify),
	(unset_and_free_g_value), (rhythmdb_entry_gather_metadata):
	* rhythmdb/rhythmdb.h:
	Add signals for dealing with transient metadata outside the set stored
	in RhythmDBEntry:
	- entry_extra_metadata_request returns a value for the requested
	  metadata field
	- entry_extra_metadata_notify notifies observers of a change to an
	  extra metadata field
	- entry_extra_metadata_gather returns the values of all extra metadata
	  fields

	* shell/rb-shell-player.c: (rb_shell_player_set_db_internal),
	(rb_shell_player_extra_metadata_cb):
	Sync the display on extra metadata changes and emit dbus signals when
	we can marshal the value.

	* shell/rb-shell.c: (rb_shell_get_song_properties):
	Implement rb_shell_song_get_properties using
	rhythmdb_entry_gather_metadata.

	* plugins/rb-python-module.c: (pyg_value_g_value_as_pyobject),
	(pyg_value_g_value_from_pyobject), (rb_python_module_init_python):
	* configure.ac:
	Add GValue marshaller for python (until bug 351072 is fixed)

	From #345592.