ZOOKEEPER-1860. Async versions of reconfig don't actually throw KeeperException nor InterruptedException (Raul Gutierrez Segales via phunt)

git-svn-id: https://svn.apache.org/repos/asf/zookeeper/trunk@1557875 13f79535-47bb-0310-9956-ffa450edef68
ZOOKEEPER-1837. Fix JMXEnv checks (potential race conditions)
  (Germán Blanco via fpj)



git-svn-id: https://svn.apache.org/repos/asf/zookeeper/trunk@1558950 13f79535-47bb-0310-9956-ffa450edef68