HDFS-4364. GetLinkTargetResponseProto does not handle null path. Contributed by Suresh Srinivas.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1433194 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4369. GetBlockKeysResponseProto does not handle null response. Contributed by Suresh Srinivas.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1433206 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-9203. RPCCallBenchmark should find a random available port. Contributec by Andrew Purtell.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1433220 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-4938. Use token request messages defined in hadoop common. Contributed by Suresh Srinvias.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1433227 13f79535-47bb-0310-9956-ffa450edef68
YARN-328. Use token request messages defined in hadoop common. Contributed by Suresh Srinivas.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1433231 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4375. Use token request messages defined in hadoop common. Contributed by Suresh Srinivas.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1433235 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-9178. src/main/conf is missing hadoop-policy.xml. Contributed by Sandy Ryza


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1433275 13f79535-47bb-0310-9956-ffa450edef68
Add missing file from previous commit.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1433276 13f79535-47bb-0310-9956-ffa450edef68