merge -r 1439652:1439653 Merging YARN-133

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merge MAPREDUCE-4838 from trunk. Add additional fields like Locality, Avataar to the JobHistory logs. Contributed by Zhijie Shen


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Revert HADOOP-9241 from branch-2 as well.

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HADOOP-9190. packaging docs is broken. (Andy Isaacson via tgraves)

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MAPREDUCE-2264. Job status exceeds 100% in some cases. (devaraj.k and sandyr via tucu)

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merge -r 1440191:1440192 from trunk to branch-2 to fix HDFS-4288

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