- Generate tokens in the expat tokenizer to display an XML error message. - Process those tokens in the XML DTD - Add a SetStringValue() method to CToken that accepts an nsString parameter. - Removed code in the XML content sink's NotifyError() method to create error message content. git-svn-id: svn://10.0.0.236/trunk@64553 18797224-902f-48f8-a5cc-f745e15eee43