globStatus using backslash for escaping does not work on Windows. Contributed by Chuan Liu.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1514168 13f79535-47bb-0310-9956-ffa450edef68
YARN-1045. Improve toString implementation for PBImpls. Contributed by Jian He.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1514185 13f79535-47bb-0310-9956-ffa450edef68