YARN-444. Moved special container exit codes from YarnConfiguration to API where they belong. Contributed by Sandy Ryza.
MAPREDUCE-5151. Updated MR AM to use standard exit codes from the API after YARN-444. Contributed by Sandy Ryza.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1468276 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd
Merge remote branch 'origin/trunk-gd' into fb-HADOOP-7435-trunk-gd