2001-09-07  Morten Welinder  <terra@diku.dk>

	* src/xml-io.c (gnumeric_xml_read_selection_clipboard): Properly
 	initialise context.
	(gnumeric_xml_write_selection_clipboard): Ditto.
	(StyleSideNames): Constify.
	(xml_arg_set): Constify.
	(xml_write_print_repeat_range): Constify.
	(xml_parse_ctx_new_full): Initialise new shared_exprs member for
 	reading.
	(xml_parse_ctx_destroy): Destroy shared_exprs.
	(xml_read_cell): Use shared_exprs over expr_map.