2000-03-12  JP Rosevear  <jpr@arcavia.com>

	* src/dialogs/dialog-cell-sort.c : Remove clip_range_to_finite.
	(dialog_cell_sort): Use range_clip_to_finite.

	* src/ranges.c (range_clip_to_finite): Make the range finite using
	sheet_get_extent if its infinite.

	* src/ranges.h: Prototype range_clip_to_finite.

	* src/workbook-format-toolbar.c (sort_cmd): Sort the current
	selection if simple.
	(sort_ascend_cmd): Call sort_cmd with asc=0.
	(sort_descend_cmd): Call sort_cmd with asc=1.

	* src/workbook-format-toolbar.c : Add sort ascend/descend buttons.
	(sort_ascend_cmd): New toolbar callback function to sort
	selection in ascending order.
	(sort_descend_cmd): New toolbar callback function to sort
	selection in descending order.