HADOOP-9099. NetUtils.normalizeHostName fails on domains where UnknownHost resolves to an IP address. Contributed by Ivan Mitic.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1455629 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-9388. TestFsShellCopy fails on Windows. Contributed by Ivan Mitic.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1455637 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd
Merge remote branch 'origin/trunk-gd' into fb-HDFS-4311-trunk-gd