YARN-378. Fix RM to make the AM max attempts/retries to be configurable per application by clients. Contributed by Zhijie Shen.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1460895 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-9433 TestLocalFileSystem#testHasFileDescriptor leaks file handle (Chris Nauroth via sanjay)


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1460922 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-5062. Fix MR AM to read max-retries from the RM. Contributed by *Zhijie Shen.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1460923 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd