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/trunk@1481976 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4300. TransferFsImage.downloadEditsToStorage should use a tmp file for destination. Contributed by Andrew Wang.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1481987 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd
Merge remote branch 'origin/trunk-gd' into fb-HDFS-4310-trunk-gd