2001-04-15  Jody Goldberg <jgoldberg@home.com>

	* src/workbook-control-gui.c (wbcg_finish_editing) : new virtual
	(workbook_control_gui_ctor_class) : connect it here.
	(wbcg_sheet_remove_all) : be sure we are no longer editing.

	* src/workbook-control-priv.h : new virtual.
	* src/workbook-control.c : ditto.
	* src/workbook-control.h : ditto.

	* src/colrow.c (colrow_visibility) : One last potential NULL.

	* src/graph-vector.c : some portability fixes.