updated maven-surefire version to 2.12.3-GD-01: solved MacOS problem.
MAPREDUCE-5012. Typo in javadoc for IdentityMapper class. Contributed by Adam Monsen.

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MAPREDUCE-5009. Killing the Task Attempt slated for commit does not clear the value from the Task commitAttempt member (Robert Parker via jeagles)

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YARN-400. RM can return null application resource usage report leading to NPE in client (Jason Lowe via tgraves)

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Merge remote branch 'origin/trunk' into trunk-gd
HADOOP-9112. test-patch should -1 for @Tests without a timeout (Surenkumar Nihalani via bobby)


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YARN-236. RM should point tracking URL to RM web page when app fails to start (Jason Lowe via jeagles)

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Merge remote branch 'origin/trunk' into trunk-gd
HDFS-4502. JsonUtil.toFileStatus(..) should check if the fileId property exists.  Contributed by Brandon Li


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Merge remote branch 'origin/trunk-gd' into fb-YAHOO-214-trunk-gd