HADOOP-10872. TestPathData fails intermittently with 'Mkdirs failed to create d1'. (Contributed by Yongjun Zhang

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1612895 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-10830. Missing lock in JavaKeyStoreProvider.createCredentialEntry. Contributed by Benoy Antony.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1612904 13f79535-47bb-0310-9956-ffa450edef68