MAPREDUCE-5036. Default shuffle handler port should not be 8080. Contributed by Sandy Ryza.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1478422 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4785 and HDFS-4784 are moved to 2.0.5 release section

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1478563 13f79535-47bb-0310-9956-ffa450edef68