2002-04-09  Andreas J. Guelzow <aguelzow@taliesin.ca>

	* gnumeric-canvas.c (gnm_canvas_key_mode_object) : Sheet objects
	  are GObjects
	* src/item-grid.c (ig_obj_create_finish) : unref the object since
	  scg_mode_edit_object might not pick up the reference
	* src/sheet-control-gui.c (scg_object_stop_editing) : unref the
	  sheet object
	(scg_mode_edit_object) : ref the object if we store a reference
	* src/workbook-control-gui.c (cb_edit_cut) :  Sheet objects
	  are GObjects