2001-05-06  Jody Goldberg <jgoldberg@home.com>

	* src/workbook-format-toolbar.c (cb_merge_cells) : fragment the
	  selection just in case.
	(cb_unmerge_cells) : ditto.  Thanks Juan Pablo.

	* src/commands.c (cmd_unmerge_cells) : remove ugly hack cast.
	(cmd_merge_cells) : ditto.  DO NOT DO THAT !

	* src/sheet.c (sheet_range_splits_region) : implement the optional
	  ignore feature for merged regions too.