[Zope-CMF] FSFile proposal

[seb bacon]

I needed to make an FSFile recently, and thought it should probably go 
in the CMF.

If no-one objects to this, then I have a question:

Should I:

   (a) associate it with a long list of common extensions (.pdf, .doc),
       and if so, which extensions?

   (b) Make FSFile the default fallback type for DirectoryViews?

   (c) Wait until I have time to implement a TTW registry of extension ->
       object type mappings (not for a while)

seb