Fix bug 7778 (Trash directory state not saved properly).

	* libnautilus-extensions/nautilus-trash-file.c:
	(is_delegated_attribute): Function that returns TRUE if it's passed
	one of the attributes that needs to be delegated to the individual
	directories that make up the trash.
	(is_delegated_attribute_predicate): Cover to use partition call on.
	(partition_attributes): Helper that partitions a list into a list
	of the delegated and non-delegated attributes.
	(real_monitor_add), (real_monitor_remove),
	(real_call_when_ready), (real_cancel_call_when_ready),
	(real_check_if_ready): Calls to be used for the trash itself for
	the non-delegated attributes.
	(trash_callback_destroy): Destroy both attribute lists.
	(monitor_add_file): Only monitor delegated attributes here.
	(trash_file_call_when_ready): Wait for the delegated attributes
	on the other files, the non-delegated attributes on this file.
	(trash_file_cancel_call_when_ready): Cancel the wait for both
	the main file and the other files.
	(trash_file_check_if_ready): Check for the delegated attributes
	on the other files, the non-delegated attributes on this file.
	(trash_file_monitor_add): Monitor the delegated attributes
	on the other files, the non-delegated attributes on this file.
	(trash_file_monitor_remove): Remove the monitor from both the
	main file and the other files.

	* libnautilus-extensions/nautilus-vfs-file.c: Formatting tweaks.