HADOOP-9652.  RawLocalFs#getFileLinkStatus does not fill in the link owner and mode.  (Andrew Wang via Colin Patrick McCabe)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1507506 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5035.  getFileLinkStatus and rename do not correctly check permissions of symlinks (Andrew Wang via Colin Patrick McCabe)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1507525 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5004. Add additional JMX bean for NameNode status data. Contributed by Trevor Lorimer.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1507530 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd
Merge remote branch 'origin/trunk-gd' into fb-xxx-hadoop-auth-kerberos-realm-trunk-gd