every time we set the width/height of a col/row.

2000-02-15  Jody Goldberg <jgoldberg@home.com>

	* src/workbook-cmd-format.c (workbook_cmd_format_{column,row}_auto_fit) :
	  Handle repositioning and redrawing here in preparation to adding undo.
	(workbook_cmd_format_column_width) : Ditto.
	(workbook_cmd_format_row_height) : Ditto.

	* src/sheet.c (sheet_reposition_comments_from_{row,col}) : publicize.
	(sheet_recompute_spans_for_col) : Ditto.
	(sheet_save_row_col_sizes) : Store cols/rows of 'default' size as 0.
	(sheet_restore_row_col_sizes) : Restore cols/rows to true default state.
	(sheet_{col,row}_set_size_pts) : document, and REMOVE calls to reposition
	  and redraw.