2001-08-30  Morten Welinder  <terra@diku.dk>

	* src/workbook.h (WORKBOOK_FOREACH_SHEET): New macro.
	(WORKBOOK_FOREACH_DEPENDENT): Re-factor.
	(Workbook): Move dependents to DependencyContainer, see below.
	Introduce new external_dependents, not yet used.

	* src/sheet.h (SHEET_FOREACH_DEPENDENT): New macro.

	* src/eval.h: (DependencyContainer): type moved from eval.c and
 	renamed from DependencyData.  Add dependent_list member which used
 	to be in Workbook.
	(DEPENDENT_IS_CELL): New macro.  Put into used lots of places.
	(DEPENDENT_CONTAINER_FOREACH_DEPENDENT): New macro.

	* src/eval.c (cb_dependent_queue_recalc): Allocate single list
 	element on stack, not heap.
	(dependent_queue_recalc_list): Don't essentailly copy all lists.
	(UNLINK_DEP): Take only dep arguement and find the container from
 	that.