ascii_to_iso
n = ascii_to_iso(NON_ID_CHAR, st, outbuf, outbytesleft);
n = ascii_to_iso(**inbuf, st, outbuf, outbytesleft);
n = ascii_to_iso(NON_ID_CHAR, st, outbuf, outbytesleft);
n = ascii_to_iso(NON_ID_CHAR, st, outbuf, outbytesleft);
static int ascii_to_iso(char, _iconv_st*, char**, size_t*);