Log Message:
Update to 1.3.3:

Serf 1.3.3 [2013-12-09, from /tags/1.3.3, r????]
  Fix issue 129: Try more addresses of multihomed servers
  Handle X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE correctly (r2225)
  Return APR_TIMEUP from poll() to enable detecting connection timeouts (r2183)