Fix issue related with the use of ares_timeout() result.

                                  Changelog

Daniel S (3 October 2007)

- Yang Tse, fix issue related with the use of ares_timeout() result.

- Alexey Pesternikov introduced CURLOPT_OPENSOCKETFUNCTION and

  CURLOPT_OPENSOCKETDATA to set a callback that allows an application to

  replace the socket() call used by libcurl. It basically allows the app to

 o re-used handle transfers with SFTP

 o curl_easy_escape() problem with byte values >= 128

 o handles chunked-encoded CONNECT responses

 o misuse of ares_timeout() result

This release includes the following known bugs:

{

  struct timeval maxtime;

  struct timeval timeout;

  struct timeval timebuf;

  struct timeval *timeout;

  int max = ares_getsock(conn->data->state.areschannel,

                         (int *)socks, numsocks);

  maxtime.tv_sec = CURL_TIMEOUT_RESOLVE;

  maxtime.tv_usec = 0;

  ares_timeout(conn->data->state.areschannel, &maxtime, &timeout);

  timeout = ares_timeout(conn->data->state.areschannel, &maxtime, &timebuf);

  Curl_expire(conn->data,

              (timeout.tv_sec * 1000) + (timeout.tv_usec/1000) );

              (timeout->tv_sec * 1000) + (timeout->tv_usec/1000));

  return max;

}

    tvp = ares_timeout(data->state.areschannel, &store, &tv);

    /* use the timeout period ares returned to us above */

    ares_waitperform(conn, tv.tv_sec * 1000 + tv.tv_usec/1000);

    ares_waitperform(conn, tvp->tv_sec * 1000 + tvp->tv_usec/1000);

    if(conn->async.done)

      break;