HADOOP-9877. Fix listing of snapshot directories in globStatus. (Binglin Chang via Andrew Wang)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1515956 13f79535-47bb-0310-9956-ffa450edef68
Revert HADOOP-9877, patch did not apply cleanly.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1515998 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4594. Merging change r1515989 from trunk to branch-2.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1516008 13f79535-47bb-0310-9956-ffa450edef68