YARN-1022. Unnecessary INFO logs in AMRMClientAsync (haosdent via bikas)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1536248 13f79535-47bb-0310-9956-ffa450edef68
YARN-1349. yarn.cmd does not support passthrough to any arbitrary class. Contributed by Chris Nauroth.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1536443 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5413. hdfs.cmd does not support passthrough to any arbitrary class. Contributed by Chris Nauroth.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1536448 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-4680. Job history cleaner should only check timestamps of files in old enough directories (Robert Kanter via Sandy Ryza)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1536558 13f79535-47bb-0310-9956-ffa450edef68
Merging r1536182 through r1536558 from trunk to branch HDFS-2832

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-2832@1536801 13f79535-47bb-0310-9956-ffa450edef68