HADOOP-10231. Add some components in Native Libraries document (Akira AJISAKA via aw)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1618061 13f79535-47bb-0310-9956-ffa450edef68
YARN-2197. Add a link to YARN CHANGES.txt in the left side of doc (Akira AJISAKA via aw)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1618069 13f79535-47bb-0310-9956-ffa450edef68
YARN-1918. Typo in description and error message for yarn.resourcemanager.cluster-id (Anandha L Ranganathan via aw)

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svn merge -c 1618080 FIXES: MAPREDUCE-5878. some standard JDK APIs are not part of system classes defaults. Contributed by Sangjin Lee


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1618081 13f79535-47bb-0310-9956-ffa450edef68
HDFS-6850. Move NFS out of order write unit tests into TestWrites class. Contributed by Zhe Zhang.


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