(struct CHISE_DS): Add new member `subtype' and `modemask'.

(struct CHISE_DS): Add new member `subtype' and `modemask'.
(chise_open_data_source): Add new arguments `subtype' and `modemask'.
(chise_ds_get_feature): Delete arguments `real_subtype', `accessmask',
`modemask'.
(chise_ds_get_ccs): Likewise.
(struct CHISE_Feature_Table): Add new member `name' and `access'.
(chise_ds_open_feature_table): Delete arguments `real_subtype',
`accessmask', `modemask'.
(chise_ft_close): Release `table->name'.
(chise_char_load_feature_value): Setup `table->db'.
(chise_char_gets_feature_value): Likewise.
(chise_char_feature_value_iterate): Return an integer value; setup
`feature->db'.
(struct CHISE_CCS_Table): Add new member `name' and `access'.
(chise_ds_open_ccs_table): Delete arguments `real_subtype',
`accessmask', `modemask'.
(chise_ccst_close): Release `table->name'.
(chise_ccs_sync): New function.
(chise_ccs_decode): Setup `ccs->db'.
(chise_ccs_set_decoded_char): Renamed from `chise_ccst_put_char';
setup `ccs->db'.