HDFS-4765. Permission check of symlink deletion incorrectly throws UnresolvedLinkException. Contributed by Andrew Wang


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1495603 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4205. fsck fails with symlinks. Contributed by Jason Lowe


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1495652 13f79535-47bb-0310-9956-ffa450edef68