HDFS-3934. duplicative dfs_hosts entries handled wrong (all files) (cmccabe)



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HADOOP-9646. Inconsistent exception specifications in FileUtils#chmod (Colin Patrick McCabe)



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Add missing file for HDFS-3934 (cmccabe)



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revert HADOOP-9646 to fix hadoop-streaming compile issue



git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1493251 13f79535-47bb-0310-9956-ffa450edef68
YARN-639. Modified Distributed Shell application to start using the new NMClient library. Contributed by Zhijie Shen.
svn merge --ignore-ancestry -c 1493280 ../../trunk/


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