MAPREDUCE-5442. $HADOOP_MAPRED_HOME/$HADOOP_CONF_DIR setting not working on Windows. Contributed by Yingda Chen.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1529077 13f79535-47bb-0310-9956-ffa450edef68
YARN-1219. FSDownload changes file suffix making FileUtil.unTar() throw exception. Contributed by Shanyu Zhao.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1529084 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd
Merge remote branch 'origin/trunk-gd' into fb-HDFS-4310-trunk-gd