* libnautilus/nautilus-list.c:
	(nautilus_list_initialize_class), (nautilus_list_initialize),
	(select_or_unselect_row_callback), (emit_selection_changed),
	(select_range), (select_row), (select_row_from_mouse),
	(row_set_selected), (select_row_unselect_others),
	(nautilus_list_select_all), (nautilus_list_unselect_all),
	(nautilus_list_button_press), (nautilus_list_keyboard_move_to),
	(nautilus_list_motion), (nautilus_list_set_selection):
	Reworked selection such that the SELECTION_CHANGED signal is
	emitted only once for every selection-affecting operation,
	and never if the selection hasn't changed at all. This makes
	such operations as Select All, switch-from-icon-view-with-lots-
	selected, and arrow-key-to-end-of-list significantly faster.