* src/file-manager/fm-directory-view.c:
	(fm_directory_view_report_zoom_level_changed):
	* src/file-manager/fm-directory-view.h:
	* src/file-manager/fm-icon-view.c: (fm_icon_view_begin_loading),
	(fm_icon_view_set_zoom_level), (fm_icon_view_bump_zoom_level),
	(fm_icon_view_zoom_to_level),
	(fm_icon_view_restore_default_zoom_level):
	* src/nautilus-view-frame.c: (nautilus_view_frame_load_client):
	* src/nautilus-window.c:
	(nautilus_window_zoom_level_changed_callback),
	(nautilus_window_connect_view),
	(nautilus_window_real_set_content_view):
	* src/nautilus-zoom-control.c: (set_zoom_level),
	(nautilus_zoom_control_button_press_event),
	(nautilus_zoom_control_reset_zoom_level),
	(nautilus_zoom_level_from_double),
	(nautilus_zoom_control_set_zoom_level):
	The zoom control is now driven by its zoomable. This corrected
	the most visible problem - getting the correct initial state.
	Previously, the zoomable never propagated any messages back
	(not that anyone was listening for them anyway).