HDFS-6246. Remove 'dfs.support.append' flag from trunk code. Contributed by Uma Maheswara Rao G.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1589927 13f79535-47bb-0310-9956-ffa450edef68
HDFS-6210. Support GETACLSTATUS operation in WebImageViewer. Contributed by Akira Ajisaka.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1589933 13f79535-47bb-0310-9956-ffa450edef68