YARN-2393. FairScheduler: Add the notion of steady fair share. (Wei Yan via kasha)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1619845 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-6044. Fully qualified intermediate done dir path breaks per-user dir creation on Windows. Contributed by Zhijie Shen.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1619863 13f79535-47bb-0310-9956-ffa450edef68
HDFS-6829. DFSAdmin refreshSuperUserGroupsConfiguration failed in security cluster. (Contributed by zhaoyunjiong)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1619882 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-10998. Fix bash tab completion code to work (Jim Hester via aw)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1619887 13f79535-47bb-0310-9956-ffa450edef68