HADOOP-10770. KMS add delegation token support. (tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1618096 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-10967. Improve DefaultCryptoExtension#generateEncryptedKey performance. (hitliuyi via tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1618101 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-10964. Small fix for NetworkTopologyWithNodeGroup#sortByDistance. Contributed by Yi Liu.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1618103 13f79535-47bb-0310-9956-ffa450edef68
Move HADOOP-10121 to correct section of CHANGES.txt

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1618105 13f79535-47bb-0310-9956-ffa450edef68
YARN-2378. Added support for moving applications across queues in CapacityScheduler. Contributed by Subramaniam Venkatraman Krishnan

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1618106 13f79535-47bb-0310-9956-ffa450edef68