2000-01-07  Michael Meeks  <mmeeks@gnu.org>

	* src/eval.c (sheet_recalc_dependencies): add precondition, use
	the single dependency hash instead for more speed. Always do the
	workbook_recalc to clearl the queue.
	(cb_cell_get_all_depends): rename to (cb_single_get_all_depends):
	and simplify. (cb_sheet_get_all_depends): clean slightly.
	(search_range_deps): Use g_list_concat + g_list_copy instead.
	(sheet_region_get_deps): clip the range to the sheet extent for vital
	speedup.