rem: parse_algo(const unsigned char *s, struct ipt_string_info *info)
add: parse_algo(const char *s, struct ipt_string_info *info)
context: parse_algo(const unsigned char *s, struct ipt_string_info *info){	if (strlen(s) <= IPT_STRING_MAX_ALGO_NAME_SIZE) {		strncpy(info->algo, s, IPT_STRING_MAX_ALGO_NAME_SIZE);		return;	}	exit_error(PARAMETER_PROBLEM, "ALGO too long `%s'", s);}