available components

	* src/nautilus-applicable-views.c (got_file_info_callback):
	Changed to use the mime APIs to determine the preferred list and
	default for view components.

	(view_identifier_has_iid, view_identifier_iids_compare): Some
	utility functions.

	Also removed many of the other functions in here that are no
	longer necessary and have effectively moved to
	nautilus-mime-actions.c