HDFS-6421. Fix vecsum.c compile on BSD and some other systems (Mit Desai via Colin Patrick McCabe)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1596324 13f79535-47bb-0310-9956-ffa450edef68
HDFS-6432. Add snapshot related APIs to webhdfs. Contributed by Jing Zhao.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1596334 13f79535-47bb-0310-9956-ffa450edef68