HDFS-4286. Changes from BOOKKEEPER-203 broken capability of including bookkeeper-server jar in hidden package of BKJM. Contributed by Rakesh R.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1608764 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4221. Remove the format limitation point from BKJM documentation as HDFS-3810 closed. Contributed by Rakesh R.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1608776 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5411. Update Bookkeeper dependency to 4.2.3. Contributed by Rakesh R.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1608781 13f79535-47bb-0310-9956-ffa450edef68