svn merge -c 1528502 FIXES: HADOOP-9063. enhance unit-test coverage of class org.apache.hadoop.fs.FileUtil. Contributed by Ivan A. Veselovsky


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1528506 13f79535-47bb-0310-9956-ffa450edef68