HADOOP-9355.  Abstract symlink tests to use either FileContext or FileSystem.  (Andrew Wang via Colin Patrick McCabe)

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HDFS-4927. CreateEditsLog creates inodes with an invalid inode ID, which then cannot be loaded by a namenode. Contributed by Chris Nauroth.

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HADOOP-9656. Gridmix unit tests fail on Windows and Linux. Contributed by Chuan Liu.

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