Show/Hide items for tool bar, location bar, sidebar, and
	status bar. The preference now controls only what you get
	for new windows. Any future "menus aren't quite right"
	issues should be filed as new bugs.

	* libnautilus-extensions/nautilus-global-preferences.h:
	* libnautilus-extensions/nautilus-global-preferences.c:
	(global_preferences_create_dialog), (global_preferences_register):
	Renamed NAUTILUS_PREFERENCES_DISPLAY_SIDEBAR and its ilk to
	NAUTILUS_PREFERENCES_START_WITH_SIDEBAR since these preferences
	now only affect the initial appearance of new windows. Also,
	clarified the text that appears in the preferences window for these.

	* src/nautilus-window-menus.c:
	Removed a bunch of code #ifdeffed WINDOW_ITEMS_TEST since the
	functionality it partly implemented is now implemented for real.
	(view_menu_show_hide_sidebar_callback),
	(view_menu_show_hide_tool_bar_callback),
	(view_menu_show_hide_location_bar_callback),
	(view_menu_show_hide...