* components/image-viewer/nautilus-image-view.c:
	(zoomable_zoom_to_fit_callback), (image_bigger_than_viewer),
	(scrolled_window_size_allocate_callback), (control_factory_common),
	(scrollable_control_factory):
	implemented initial "zoom-to-fit" if an image is bigger than the
	displayable area, as requested by Mike Boich.