2001-06-03  Morten Welinder  <terra@diku.dk>

	* src/func.c (function_add_args): Do arg type checking here.
	(fn_def_new): Not here.
	(function_remove): Free cached arg types.
	(function_add_args): Pre-calculate arg counts and types.
	(function_def_get_full_info_if_needed): Ditto.
	(function_call_with_list): Use pre-calculated arg counts and
 	types.
	(function_add_name_only): Use FUNCTION_NAMEONLY for type.

2001-06-03  Morten Welinder  <terra@diku.dk>

	* fn-information.c (information_functions_init): Don't supply arg
 	spec for node function.
	* fn-lookup.c (lookup_functions_init): Ditto.
	* fn-math.c (math_functions_init): Ditto.
	* fn-eng.c (eng_functions_init): Ditto.

	* fn-date.c (gnumeric_datedif): Constify.