ZOOKEEPER-1610. Some classes are using == or != to compare Long/String objects instead of .equals() (Edward Ribeiro via phunt)

git-svn-id: https://svn.apache.org/repos/asf/zookeeper/trunk@1531396 13f79535-47bb-0310-9956-ffa450edef68
ZOOKEEPER-1715. Upgrade netty version (Sean Bridges via phunt)

git-svn-id: https://svn.apache.org/repos/asf/zookeeper/trunk@1531444 13f79535-47bb-0310-9956-ffa450edef68