YARN-563. Add the concept of an application-type for each application. Contributed by Mayank Bansal.
MAPREDUCE-5246. Specify application-type at the time of job submission after YARN-563. Contributed by Mayank Bansal.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1485790 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