Start adding model for loading complete TLDs using Digester.
This will unify Jasper's model, which is mostly complete but uses a separate DOM model, 
and Catalina's, which is Digester based but only handles listener entries.

Basic top-level entries are handled but not child elements for tags etc

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1512148 13f79535-47bb-0310-9956-ffa450edef68