[Zope-PAS] Passwordless authentication

[Lennart Regebro]

Zachery Bir wrote:
 > Nope. The Authentication plugin hands back a tuple of unmangled id
 > and login (login can be None).
 >
 > That tuple will be passed to a IUserEnumeration plugin to satisfy
 > within itself. First one to respond positively wins, and *that's* the
 > point where PAS will mangle the id (the winning plugin's id is the
 > namespace in the above method).

OK, I made a call to _verifyUser() instead of _mangleId(). This works
fine, and I've checked it in.