KEEPER-1878. Inconsistent behavior in autocreation of dataDir and dataLogDir (Rakesh R via michim)


git-svn-id: https://svn.apache.org/repos/asf/zookeeper/trunk@1577750 13f79535-47bb-0310-9956-ffa450edef68
ZOOKEEPER-1862. ServerCnxnTest.testServerCnxnExpiry is intermittently failing (Rakesh R via michim)


git-svn-id: https://svn.apache.org/repos/asf/zookeeper/trunk@1577756 13f79535-47bb-0310-9956-ffa450edef68
Apply ZOOKEEPER-1891.

https://issues.apache.org/jira/secure/attachment/12634073/ZOOKEEPER-1891.patch
Apply ZOOKEEPER-1892.patch.

https://issues.apache.org/jira/secure/attachment/12634331/ZOOKEEPER-1892.patch
Apply ZOOKEEPER-1870.patch.

https://issues.apache.org/jira/secure/attachment/12635000/ZOOKEEPER-1870.patch
add a class for getting hostname.