Use correct attribute for TLD validation.
Add missing attribute.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc7.0.x/trunk@1544582 13f79535-47bb-0310-9956-ffa450edef68
Better Javadoc

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc7.0.x/trunk@1544584 13f79535-47bb-0310-9956-ffa450edef68