[Zope-CMF] GenericSetup list property purge

[Florent Guillaume]

I recently introduced the fact that in extension profiles list  
properties aren't purged by default.
But really this introduces problems, as if you simply import an  
extension profile twice you'll get all you lists doubled.

So I think I'll use the opposite semantic, closer to what was the  
case before: purge by default for lists even in extension profiles,  
except if purge="False" is present on the property.

Opinions?

Florent

-- 
Florent Guillaume, Nuxeo (Paris, France)   Director of R&D
+33 1 40 33 71 59   http://nuxeo.com   fg at nuxeo.com