2002-03-24  Jon K Hellan  <hellan@acm.org>

	* plugin.c (scm_register_function) constify help.
	(func_scm_apply): Make expr_node_list a GnmExprList.

	* smob-value.c (init_value_type): Guile API doesn't expect
	arguments to be declared const. So cast constants to non-const to
	silence warning.