(some vestiges of wait_until_ready remain in the farther reaches
	of the UI).

	* libnautilus-extensions/nautilus-mime-actions.h,
	libnautilus-extensions/nautilus-mime-actions.c
	(nautilus_mime_actions_check_if_required_attributes_ready,
	nautilus_mime_actions_get_required_file_attributes,
	nautilus_mime_actions_wait_for_required_file_attributes): New
	functions to help with monitoring or waiting for required
	attributes for the nautilus mime API.
	(nautilus_mime_get_default_action_type_for_file,
	nautilus_mime_get_default_action_for_file,
	nautilus_mime_get_default_application_for_file_internal,
	nautilus_mime_get_default_application_for_file,
	nautilus_mime_is_default_application_for_file_user_chosen,
	nautilus_mime_get_default_component_for_file_internal,
	nautilus_mime_get_default_component_for_file,
	nautilus_mime_is_default_component_for_file_user_chosen,
	nautilus_mime_get_short_list_applications_for_file,
	nautilus_mime_get_short_list_components_for_file,
	nautilus_mime_get_short_list_methods_for_file,
	nautilus_mime_get_all_applications_for_file,
	nautilus_mime_has_any_applications_for_file,
	nautilus_mime_get_all_components_for_file,
	nautilus_mime_has_any_components_for_file,
	nautilus_mime_set_default_action_type_for_file,
	nautilus_mime_set_default_application_for_file,
	nautilus_mime_set_default_component_for_file,
	nautilus_mime_set_short_list_applications_for_file,
	nautilus_mime_set_short_list_components_for_file,
	nautilus_mime_add_application_to_short_list_for_file,
	nautilus_mime_remove_application_from_short_list_for_file,
	nautilus_mime_add_component_to_short_list_for_file,
	nautilus_mime_remove_component_from_short_list_for_file,
	nautilus_mime_extend_all_applications_for_file,
	nautilus_mime_remove_from_all_applications_for_file,
	mime_type_get_supertype): Don't `nautilus_file_wait_until_ready'
	for the required attributes; instead assert (Well, return_if_fail)
	that they are available using
	`nautilus_file_check_if_ready'. Also, use
	`nautilus_file_get_uri_scheme' where possible.

	* libnautilus-extensions/nautilus-directory-async.c
	(mime_list_callback): Correct some coding mistakes.

	* libnautilus-extensions/nautilus-wait-until-ready.h,
	libnautilus-extensions/nautilus-directory.c: Remove
	`nautilus_directory_wait_until_ready'.

	* libnautilus-extensions/nautilus-file.h,
	libnautilus-extensions/nautilus-file.c
	(nautilus_file_get_uri_scheme): new convenience function.

	* libnautilus-extensions/nautilus-program-chooser.c:
	(repopulate_program_list, is_application_default_for_file,
	is_component_default_for_file,
	is_component_in_short_list_for_file,
	is_application_in_short_list_for_file,
	program_file_pair_is_default_for_file,
	program_file_pair_is_in_short_list_for_file,
	add_to_short_list_for_file, remove_from_short_list_for_file,
	remove_default_for_item, set_default_for_item): wait_until_ready
	for required file attributes.

	* libnautilus-extensions/nautilus-program-choosing.c:
	(any_programs_available_for_file): wait_until_ready for required
	file attributes.

	* src/file-manager/fm-directory-view.c: (switch_location_and_view,
	create_open_with_gtk_menu, reset_bonobo_open_with_menu,
	activate_callback): Wait for the right file attributes.

	* src/nautilus-applicable-views.c: (got_file_info_callback),
	(nautilus_navigation_info_new): Wait for the right file
	attributes. (no wait_until_ready).

	* src/nautilus-sidebar.c: (nautilus_sidebar_destroy,
	nautilus_sidebar_update_buttons, nautilus_sidebar_update_all),
	nautilus_sidebar_set_uri): Monitor the file the sidebar is
	displaying, and update when it's attributes change.

	* src/nautilus-window-manage-views.c
	(nautilus_window_set_content_view): Wait for the right file
	attributes. (no wait_until_ready).

	* src/nautilus-window.c: (nautilus_window_destroy,
	view_menu_choose_view_callback, view_menu_vfs_method_callback,
	nautilus_window_real_load_content_view_menu,
	nautilus_window_load_content_view_menu): Wait for the right
	attributes. (no wait_until_ready in this chain).

	* test/test-nautilus-mime-actions-set.c (main): Wait for the right attributes.
	* test/test-nautilus-mime-actions.c (main): Wait for the right attributes.