the scrollable area)

	Start of bug 1969 (search controls need to adjust sensitivity
	appropriately)

	* libnautilus-extensions/nautilus-icon-container.c:
	(nautilus_icon_container_update_scroll_region): Renamed from
	"update_scroll_region" since it's now in a header file.
	(relayout), (nautilus_icon_container_clear): Updated for name change.
	(nautilus_icon_container_move_icon): Added FIXME about how
	update_scroll_region is handled at different levels at Darin's
	request.
	* libnautilus-extensions/nautilus-icon-private.h:
	Put prototype for nautilus_icon_container_update_scroll_region
	here so it could be called from drag-and-drop code.
	* libnautilus-extensions/nautilus-icon-dnd.c: (handle_local_move):
	Update scroll region after drag.

	* src/nautilus-complex-search-bar.c:
	(update_options_buttons_state): New function, updates the sensitivity
	of "Fewer Choices" button based on number of displayed criteria. Later
	it will also handle "More Choices" button and perhaps others.
	(nautilus_complex_search_bar_initialize):
	Call update_options_button_state after creating button widgets.
	(more_options_callback), (fewer_options_callback): Call
	update_options_button_state when number of criteria changes.