HDFS-6528. Add XAttrs to TestOfflineImageViewer. Contributed by Stephen Chu.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1603021 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-10702. Merging change r1603023 from trunk to branch-2.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1603024 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-10666. Remove Copyright /d/d/d/d Apache Software Foundation from the source files license header. Contributed by Henry Saputra.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1603026 13f79535-47bb-0310-9956-ffa450edef68
Merge r1603028 from trunk. YARN-1885. Fixed a bug that RM may not send application-clean-up signal to NMs where the completed applications previously ran in case of RM restart. Contributed by Wangda Tan

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1603030 13f79535-47bb-0310-9956-ffa450edef68