HADOOP-9350. Hadoop not building against Java7 on OSX

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1522867 13f79535-47bb-0310-9956-ffa450edef68
YARN-1194. TestContainerLogsPage fails with native builds. Contributed by Roman Shaposhnik


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1522968 13f79535-47bb-0310-9956-ffa450edef68
Merge remote-tracking branch: upstream/trunk