[Zope-CMF] CMFCore/MembershipTool.py uses acl_users._addUser()

[Lennart Regebro]

CMFCore/MembershipTool.py uses acl_users._addUser(). However, the API 
does not specify it, and it is rather internal to BasicUserFolder. PAS 
does not implement it, for example.

Instead, PAS (and others) uses _doAddUser().

The change to make MembershipTool use _doAddUser() instead is trivial, 
and I can do it unless somebody raises some reasonable objection.

-- 
Lennart Regebro, Nuxeo     http://www.nuxeo.com/
CPS Content Management     http://www.cps-project.org/