BOOKKEEPER-576: Bookie client should use netty Decoder/Encoder (ivank via sijie)

git-svn-id: https://svn.apache.org/repos/asf/zookeeper/bookkeeper/trunk@1457592 13f79535-47bb-0310-9956-ffa450edef68
 BOOKKEEPER-585: Auditor logs noisily when a ledger has been deleted (ivank via sijie) 

git-svn-id: https://svn.apache.org/repos/asf/zookeeper/bookkeeper/trunk@1457596 13f79535-47bb-0310-9956-ffa450edef68
BOOKKEEPER-573: Script to start a bookkeeper cluster (ivank via sijie)

git-svn-id: https://svn.apache.org/repos/asf/zookeeper/bookkeeper/trunk@1457598 13f79535-47bb-0310-9956-ffa450edef68