Add missing '@Deprecated' annotations.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/lang/trunk@1553927 13f79535-47bb-0310-9956-ffa450edef68
Fix Javadoc typo.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/lang/trunk@1553928 13f79535-47bb-0310-9956-ffa450edef68