2000-01-19  JP Rosevear  <jpr@arcavia.com>

	* src/dialogs/dialog-cell-sort.c (dialog_cell_sort): Modularize a
	bit more for the sort dialog.  Use GLADE_FILE macro.
	(dialog_cell_sort_ok): New function connected to the sort
	dialog ok button.  Builds the clause data and then calls cmd_sort.
	(dialog_cell_sort_adv): Use GLADE_FILE macro.
	(clip_range_to_finite): New function, reduces an infinite range to
	an appropriate finite range.

	* src/commands.c (cmd_sort): New function for new command
	organization.
	(cmd_sort_redo): ditto
	(cmd_sort_undo): ditto
	(cmd_sort_destroy): ditto

	* src/sort.c (sort_compare_values): The former compare_values
	function from dialog_cell_sort.c.
	(sort_compare_values2): Does comparisons on original order
	for undo.
	(sort_qsort_func): The former qsort_func function from
	dialog_cell_sort.c.
	(sort_qsort_func2): Quicksort function for undo.
	(sort_range): Performs the sort.  Much the same as the
	sort_cell_range function that was in dialog_cell_sort.c.
	Sorts the data of a CmdSort object, creating it if necessary.
	Takes the quicksort function to call as an argument.

	* src/sort.h : New header file

	* src/ranges.h: Prototype range_name.

	* src/ranges.c (range_name): New function that returns a
	const char * to "A1:B5" type range name.