else if (strncasecmp (args, "off", 3) == 0)
else if (__strncasecmp (args, "off", 3) == 0)
arg_bool (const char * fname, int line_num, const char * args, unsigned flag){  if (strncasecmp (args, "on", 2) == 0)    {      args += 2;      _res_hconf.flags |= flag;    }  else if (strncasecmp (args, "off", 3) == 0)    {      args += 3;      _res_hconf.flags &= ~flag;    }  else    {      fprintf (stderr, "%s: line %d: expected `on' or `off', found `%s'\n",	       fname, line_num, args);      return 0;    }  return args;}