* srfi-4.c: Minor cleanups.

	* srfi-4.c: Minor cleanups.

	* srfi-14.c (scm_char_set_fold, scm_char_set_unfold)
	(scm_char_set_unfold_x, scm_char_set_for_each)
	(scm_char_set_map, scm_char_set_filter)
	(scm_char_set_filter_x, scm_char_set_count)
	(scm_char_set_every, scm_char_set_any): Replace calls to
	scm_apply() with the corresponding scm_call_N() functions.

	* srfi-14.c (scm_char_set_ref, scm_char_set_cursor_next)
	(scm_char_set_unfold, scm_char_set_unfold_x)
	(scm_char_set_map, scm_char_set_diff_plus_intersection)
	(scm_char_set_diff_plus_intersection_x): Replace deprecated macros
	SCM_LISTN with calls to scm_list_N().

	* srfi-13.c (scm_string_tabulate, scm_string_map)
	(scm_string_map_x, scm_string_unfold)
	(scm_string_unfold_right): Replace deprecated macros SCM_LISTN
	with calls to scm_list_N().

	* srfi-13.c (scm_string_any, scm_string_every),
	(scm_string_tabulate, scm_string_trim),
	(scm_string_trim_right, scm_string_trim_both),
	(scm_string_compare, scm_string_compare_ci),
	(scm_string_indexS, scm_string_index_right),
	(scm_string_skip, scm_string_skip_right, scm_string_count),
	(scm_string_map, scm_string_map_x, scm_string_fold),
	(scm_string_fold_right, scm_string_unfold),
	(scm_string_unfold_right, scm_string_for_each),
	(scm_string_filter, scm_string_delete): Replace calls to
	scm_apply() with the corresponding scm_call_N() functions.