Move HDFS-5257,HDFS-5427,HDFS-5443,HDFS-5476,HDFS-5425,HDFS-5474,HDFS-5504,HDFS-5428 into branch-2.3 section.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1550011 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5074. Allow starting up from an fsimage checkpoint in the middle of a segment. Contributed by Todd Lipcon.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1550016 13f79535-47bb-0310-9956-ffa450edef68
Move entry for HDFS-5074 to correct section.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1550027 13f79535-47bb-0310-9956-ffa450edef68
Move HDFS-5283 to section branch-2.3.0

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1550032 13f79535-47bb-0310-9956-ffa450edef68