Hacky fix to not break tomcat when java 1.5 is used in presence of the xercesImpl lib. 

Patch by: amitmanjhi
Review by: rjrjr (desk review)



git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@5916 8db76d5a-ed1c-0410-87a9-c151d255dfc7