HADOOP-9845. Update protobuf to 2.5 from 2.4.x. (tucu)

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HADOOP-9872. Improve protoc version handling and detection. (tucu)

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HADOOP-9652.  RawLocalFs#getFileLinkStatus does not fill in the link owner and mode.  (Andrew Wang via Colin Patrick McCabe)

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HDFS-4816. transitionToActive blocks if the SBN is doing checkpoint image transfer. (Andrew Wang)

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HADOOP-9381. Merge 1514089 from trunk

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HDFS-5051. Merge 1514110 from trunk

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HDFS-5068. Convert NNThroughputBenchmark to a Tool to allow generic options. Contributed by Konstantin Shvachko.

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Add target, .classpath, .project and .settings to svn:ignore.


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Merge -c 1514135 from trunk to branch-2 to fix YARN-1056. Remove dual use of string 'resourcemanager' in yarn.resourcemanager.connect.{max.wait.secs|retry_interval.secs}. Contributed by Karthik Kambatla.

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