Fixing JIRA Bug #1181:  http://issues.apache.org/jira/browse/XERCESJ-1181
Fixing JIRA Bug #1181: 
http://issues.apache.org/jira/browse/XERCESJ-1181

When an entire Document is cloned the internal subset from the DocumentType 
node was not being copied into the cloned DocumentType. This is fixed thanks
to the patch from Jacob Kjome.


git-svn-id: 21df804813e9d3638e43477f308dd0be51e5f30f@437770 13f79535-47bb-0310-9956-ffa450edef68

RackerWilliams/xercesj,RackerWilliams/xercesj,RackerWilliams/xercesj,ronsigal/xerces,jimma/xerces,jimma/xerces,jimma/xerces,ronsigal/xerces,ronsigal/xerces