Port r1443 to the 1.4 release branch.  Original log message:

Fixed potential XSS vulnerability in the module not found error message.

Patch by: jat
Review by: tobyr (desk review)



git-svn-id: https://google-web-toolkit.googlecode.com/svn/releases/1.4@1498 8db76d5a-ed1c-0410-87a9-c151d255dfc7