2002-09-25  Jody Goldberg <jody@gnome.org>

	* src/parser.y : begin support for intersection and sets, still needs
	  lots of work, but I don't want to get too out of sync.

	* src/expr.c : handle intersection and sets.
	* src/expr-name.c (name_refer_circular) : ditto.

	* src/workbook.c (post_sheet_index_change) : don't emit the signal
	  during destruction.

2002-09-24  Lutz Müller <lutz@users.sourceforge.net>

	* src/dialogs/dialog-sheet-order.c: Be aware of changes in the
	  sheet order.
	* src/workbook.[c,h]: Provide a "sheet_order_changed" signal.
	* src/workbook-control-gui.c: Remove debugging messages. Allow
	  dropping the sheet anywhere in the workbook - reordering will still
	  be done.