Cannot stop Locale permutations

[Larry Strickland]

I have a project I added gwt-cal to.  All of a sudden, compilation generates 66 permutations.  

So I added the following lines to my module.gwt.xml file to try to stop locale compilation (I only need English). 

  <extend-property name='locale' values='en'/> 

  <set-property-fallback name='locale' value='en'/> 

  <set-property name='locale' value='en'/>

However, I still get 66 permutations.

I have no idea where to go next!! Can anybody help?