2001-08-29  Morten Welinder  <terra@diku.dk>

	* src/eval.c (workbook_queue_all_recalc): Avoid listifying.
	(cb_dependent_queue_recalc, cell_queue_recalc): Recast in terms of
 	dependent_queue_recalc_list.
	(dependent_queue_recalc_list): Eliminate recursion which used to
 	be unbounded deep.

	* src/eval.h (struct _Dependent): Name next to next_dep and prev
 	to prev_dep.  (Because we might need a similar list for evaluation
 	at some point.)

	(DEPENDENT_TYPE): New macro type hide most uses of the ugly
 	DEPENDENT_TYPE_MASK.  All such uses fixed.