Change of SVN externals for trunks-users

[Vincent Massol]

Hi,

I'm about to modify the SVN externals definition for trunks-users so  
that they point to our own XWiki readonly SVN repo instead of  
pointing to the OW repo as there are issues with it.

If you have checked out trunks-users, then do a svn update once I've  
made the change. Hopefully that'll just work. If not, you might need  
to do a new checkout.

Sorry for that

Thanks
-Vincent