* vectors.c (s_scm_vector_p, list->vector, scm_vector)

	* vectors.c (s_scm_vector_p, list->vector, scm_vector)
	(scm_vector_ref, scm_vector_set_x, scm_vector_to_list)
	(scm_vector_fill_x), strorder.c (scm_string_equal_p)
	(scm_string_ci_equal_p, scm_string_less_p, scm_string_leq_p)
	(scm_string_gr_p, scm_string_geq_p, scm_string_ci_less_p)
	(scm_string_ci_geq_p), symbols.c (scm_symbol_p)
	(scm_symbol_to_string, scm_string_to_symbol): Changed use of @t{}
	to @code{} as the texinfo manual recommends, converted the
	examples to use a @lisp{}-environment.

	* strports.c (scm_eval_string): Cleaned up the docstring.

	* struct.c (scm_struct_p, scm_struct_vtable_p): Added texinfo
	markup.

	* numbers.c (scm_exact_p, scm_odd_p, scm_even_p)
	(scm_number_to_string, scm_string_to_number, scm_number_p)
	(scm_real_p, scm_integer_p, scm_inexact_p, scm_make_rectangular)
	(scm_make_polar, scm_inexact_to_exact): Added texinfo markup.
	(scm_ash): Added texinfo markup and removed obsolete @refill.
	(scm_gr_p): Corrected comment.
	(scm_gr_p, scm_leq_p, scm_geq_p): Added texinfo markup to (future
	docstring) comments.
	(scm_positive_p, scm_less_p, scm_num_eq_p, scm_real_p)
	(scm_number_p, scm_negative_p, scm_max, scm_min, scm_sum)
	(scm_difference, scm_product, scm_divide, scm_asinh, scm_acosh)
	(scm_atanh, scm_truncate, scm_round, scm_exact_to_inexact)
	(floor, ceiling, $sqrt, $abs, $exp, $log, $sin, $cos, $tan, $asin)
	($acos, $atan, $sinh, $cosh, $tanh, scm_real_part, scm_imag_part)
	(scm_magnitude, scm_angle, scm_abs, scm_quotient, scm_remainder)
	(scm_modulo, scm_gcd, scm_lcm): Added (future docstring) comments.