HDFS-5482. DistributedFileSystem#listPathBasedCacheDirectives must support relative paths. Contributed by Colin Patrick McCabe.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1540257 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-10088. copy-nativedistlibs.sh needs to quote snappy lib dir. Contributed by Raja Aluri.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1540270 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5469. Add configuration property for the sub-directroy export path. Contributed by Brandon Li

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1540443 13f79535-47bb-0310-9956-ffa450edef68
Merging r1540239 through r1540547 from trunk to branch HDFS-2832

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-2832@1540549 13f79535-47bb-0310-9956-ffa450edef68