* Add "last" parameter to hook function. Very basic ordering, and hopefully

* Add "last" parameter to hook function. Very basic ordering, and hopefully
  nothing more spohisticated will be needed.
* Add formbuilder_setup and formbuilder hooks.
* Split out a passwordauth module, that holds all the traditional password
  based authentication etc code. It's enabled by default, but can be disabled
  if you want only openid or some other auth method.