2002-04-27  Jody Goldberg <jody@gnome.org>

	* src/sheet-control-gui.c (scg_finalize) : destroy the views
	  before we destroy the control.

	* src/sheet-object.c (cb_sheet_object_view_finalized) : renamed from
	  sheet_object_view_destroyed and simplified to use weakrefs.  At this
	  point all we can do is remove the view from the list.
	(sheet_object_new_view) : using weakrefs we are more constrained.
	  object data is already done so there is no need to add refs to the
	  control.