to default). Added "Reset Background" to Settings and
	context menu.

	* libnautilus-extensions/nautilus-background.h:
	* libnautilus-extensions/nautilus-background.c:
	(nautilus_background_is_set), (nautilus_background_reset):
	New functions for checking whether the background has
	been set, and for resetting it to the uncustomized state.

	* libnautilus-extensions/nautilus-directory-background.c:
	(background_changed_callback), (directory_changed_callback):
	Changed default metadata value from white to NULL.

	* src/file-manager/fm-directory-view.h,
	* src/file-manager/fm-directory-view.c:
	(fm_directory_view_initialize_class), (reset_background_callback),
	(fm_directory_view_get_background_widget),
	(fm_directory_view_get_background), (compute_menu_item_info),
	(append_gtk_menu_item_with_view), (append_selection_menu_subtree),
	(fm_directory_view_real_create_background_context_menu_items),
	(create_open_with_gtk_menu),
	(fm_directory_view_real_create_selection_context_menu_items),
	(insert_bonobo_menu_item), (insert_bonobo_menu_subtree),
	(reset_bonobo_trash_delete_menu), (reset_bonobo_open_with_menu),
	(fm_directory_view_real_merge_menus), (update_one_menu_item),
	(fm_directory_view_real_update_menus): Put "Reset Background"
	menu item in Settings menu and context menu; keep its
	sensitivity synched with background state.

	* src/file-manager/fm-icon-view.c:
	(fm_icon_view_get_background_widget): New function to let
	superclass get at the NautilusBackground.
	(fm_icon_view_initialize_class): Wire up new function.
	(fm_icon_view_initialize), (create_icon_container): Remove
	unused return value for create_icon_container.

	* src/file-manager/fm-list-view.c:
	(fm_list_view_get_background_widget): New function to let
	superclass get at the NautilusBackground.
	(fm_list_view_initialize_class): Wire up new function.
	(create_list): Remove unused return value.