MAPREDUCE-5356. Ability to refresh aggregated log retention period and check interval. Contributed by Ashwin Shankar


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1506226 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-9759. Add support for NativeCodeLoader#getLibraryName on Windows. Contributed by Chuan Liu.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1506325 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd
Merge remote branch 'origin/trunk-gd' into fb-YAHOO-218-trunk-gd