Javadoc clean up.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/io/trunk@1563231 13f79535-47bb-0310-9956-ffa450edef68
Javadoc clean up.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/io/trunk@1563232 13f79535-47bb-0310-9956-ffa450edef68