YARN-1266. Implemented PB service and client wrappers for ApplicationHistoryProtocol. Contributed by Mayank Bansal.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/YARN-321@1544391 13f79535-47bb-0310-9956-ffa450edef68
YARN-1266. Added files that were forgotten in the last commit.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/YARN-321@1544392 13f79535-47bb-0310-9956-ffa450edef68
YARN-955. Implemented ApplicationHistoryProtocol handler. Contributed by Mayank Bansal.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/YARN-321@1544393 13f79535-47bb-0310-9956-ffa450edef68
YARN-1242. Changed yarn scripts to be able to start ApplicationHistoryServer as an individual process. Contributed by Mayank Bansal.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/YARN-321@1544399 13f79535-47bb-0310-9956-ffa450edef68
Merge remote-tracking branch 'apache/YARN-321' into YARN-954

Conflicts:
	hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/conf/YarnConfiguration.java
	hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-applicationhistoryservice/src/main/java/org/apache/hadoop/yarn/server/applicationhistoryservice/ApplicationHistoryServer.java