Consistency
tabs -> 4 spaces

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/pool/trunk@1537458 13f79535-47bb-0310-9956-ffa450edef68
Make package private

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/pool/trunk@1537459 13f79535-47bb-0310-9956-ffa450edef68