MAPREDUCE-4678. Running the Pentomino example with defaults throws java.lang.NegativeArraySizeException. Contributed by Chris McConnell. (harsh)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1433413 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-4925. The pentomino option parser may be buggy. Contributed by Karthik Kambatla. (harsh)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1433417 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-4921. JobClient should acquire HS token with RM principal (Daryn Sharp via bobby)


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1433469 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4399. precommit release audit warnings (tgraves)

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Merge branch 'branch-0.23' of github.com:griddynamics/yhadoop-common into branch-0.23-gd