(chise_char_set_feature_value): Use

(chise_char_set_feature_value): Use
`concord_obj_put_feature_value_str' instead of
`concord_stroid_set_feature_str'.
(chise_char_load_feature_value): Use
`concord_obj_get_feature_value_string' instead of
`concord_stroid_get_feature_string'.
(chise_char_gets_feature_value): Use `concord_obj_gets_feature_value'
instead of `concord_stroid_gets_feature'.
(chise_feature_foreach_char_with_value): Use
`concord_feature_foreach_obj_string' instead of
`concord_feature_foreach_object_string'.
(chise_ccs_decode): Use `concord_index_strid_get_obj_string' instead
of `concord_index_strid_get_object_string'.
(chise_ccs_set_decoded_char): Use `concord_index_strid_put_obj'
instead of `concord_index_strid_set_object_str'.
(chise_feature_set_property_value): Use
`concord_obj_put_feature_value_str' instead of
`concord_stroid_set_feature_str'.
(chise_feature_load_property_value): Use
`concord_obj_get_feature_value_string' instead of
`concord_stroid_get_feature_string'.
(chise_feature_gets_property_value): Use
`concord_obj_gets_feature_value' instead of
`concord_stroid_gets_feature'.