[development] User registration without email

[Chad Phillips -- Apartment Lines]

been following this thread, and as maintainer of logintoboggan  
module, it does seem to be a logical place to try to implement this  
functionality.  however, the module is already trying to support  
several other login strategies, and i do have concerns about making  
the code a mess by trying to do everything.  maybe this feature would  
be best implemented as a small contrib module of it's own?  in any  
case, if somebody will file a feature request for this, i'll look at  
the code and see if it makes sense to go in there

chad