YARN-984. Renamed the incorrectly named applicationhistoryservice.records.pb.impl package to be applicationhistoryservice.records.impl.pb. Contributed by Devaraj K.
svn merge --ignore-ancestry -c 1508187 ../../branches/YARN-321-old/


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/YARN-321@1556693 13f79535-47bb-0310-9956-ffa450edef68