TestInfoBlock fails on Windows because of line ending missmatch. Contributed by Ivan Mitic.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1492383 13f79535-47bb-0310-9956-ffa450edef68
YARN-648. FS: Add documentation for pluggable policy. (kkambatl via tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1492388 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd
Merge remote branch 'origin/trunk-gd' into fb-HDFS-4312-trunk-gd