YARN-591. Moved RM recovery related records out of public API as they do not belong there. Contributed by Vinod Kumar Vavilapalli.
svn merge --ignore-ancestry -c 1476324 ../../trunk/


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1476327 13f79535-47bb-0310-9956-ffa450edef68
YARN-363. Add webapps/proxy directory without which YARN proxy-server fails when started in stand-alone mode. Contributed by Kenji Kikushima.
svn merge --ignore-ancestry -c 1476330 ../../trunk/


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1476332 13f79535-47bb-0310-9956-ffa450edef68
YARN-562. Modified NM to reject any containers allocated by a previous ResourceManager. Contributed by Jian He.
MAPREDUCE-5167. Update MR App after YARN-562 to use the new builder API for the container. Contributed by Jian He.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1476346 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/branch-2' into branch-2-gd
Merge remote branch 'origin/branch-2-gd' into fb-YAHOO-226-branch-2-gd