(scm_bitvector_p, scm_bitvector,

(scm_bitvector_p, scm_bitvector,
scm_make_bitvector, scm_bitvector_length, scm_bitvector_ref,
scm_bitvector_set_x, scm_list_to_bitvector, scm_bitvector_to_list,
scm_bitvector_fill_x, scm_is_bitvector, scm_c_make_bitvector,
scm_c_bitvector_length, scm_c_bitvector_ref,
scm_c_bitvector_set_x, scm_bitvector_elements,
scm_bitvector_release, scm_frame_bitvector_release,
scm_tc16_bitvector, bitvector_free, bitvector_print,
bitvector_equalp, count_ones, find_first_one): New.
(scm_bit_count, scm_bit_position, scm_bit_set_star_x,
scm_bit_count_star, scm_bit_invert_x, scm_istr2bve): Rewritten
using the new C API for bitvectors and maybe count_ones or
find_first_one, as appropriate.
(SCM_I_MAX_LENGTH, SCM_BITVECTOR_P, SCM_BITVECTOR_BASE,
SCM_SET_BITVECTOR_BASE, SCM_BITVECTOR_MAX_LENGTH,
SCM_BITVECTOR_LENGTH, SCM_MAKE_BITVECTOR_TAG,
SCM_SET_BITVECTOR_LENGTH): Removed.  Replaced all uses with the
new functions from above.
(scm_i_proc_make_vector, scm_i_proc_make_string,
scm_i_proc_make_bitvector): Made non-static for use in
scm_i_generalized_vector_creator.
(scm_make_u1vector): Removed, replaced by scm_make_bitvector.
(scm_make_uve): Validate that the created object is a generalized
vector.
(scm_i_legacy_tag): Removed.
(scm_i_print_array): Do it here.
(scm_raprin1): Only print enclosed arrays.