HDFS-6752. Avoid Address bind errors in TestDatanodeConfig#testMemlockLimit (vinayakumarb)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1613486 13f79535-47bb-0310-9956-ffa450edef68
Fix up HDFS CHANGES.txt for 2.5.0

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1613494 13f79535-47bb-0310-9956-ffa450edef68
Fix up Common CHANGES.txt for 2.5.0

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1613498 13f79535-47bb-0310-9956-ffa450edef68