HDFS-4381. Document fsimage format details in FSImageFormat class javadoc. Contributed by Jing Zhao.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1432149 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-9139 improve killKdc.sh (Ivan A. Veselovsky via bobby)


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1432151 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-9192. Move token related request/response messages to common. Contributed by Suresh Srinivas.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1432158 13f79535-47bb-0310-9956-ffa450edef68