ZOOKEEPER-1633. Introduce a protocol version to connection initiation message (Alexander Shraer via michim)


git-svn-id: https://svn.apache.org/repos/asf/zookeeper/branches/branch-3.4@1463399 13f79535-47bb-0310-9956-ffa450edef68
ZOOKEEPER-1697:  large snapshots can cause continuous quorum failure
  (phunt via fpj)



git-svn-id: https://svn.apache.org/repos/asf/zookeeper/branches/branch-3.4@1481322 13f79535-47bb-0310-9956-ffa450edef68
ZOOKEEPER-1706. Typo in Double Barriers example (Jingguo Yao via fpj)



git-svn-id: https://svn.apache.org/repos/asf/zookeeper/branches/branch-3.4@1481722 13f79535-47bb-0310-9956-ffa450edef68
ZOOKEEPER-1642. Leader loading database twice (fpj via camille)

git-svn-id: https://svn.apache.org/repos/asf/zookeeper/branches/branch-3.4@1483441 13f79535-47bb-0310-9956-ffa450edef68
ZOOKEEPER-1663. scripts don't work when path contains spaces (Amichai Rothman via camille)

git-svn-id: https://svn.apache.org/repos/asf/zookeeper/branches/branch-3.4@1484528 13f79535-47bb-0310-9956-ffa450edef68