[OpenAFS] significant delay for afs user to login as root via su

[Harald Barth]

> You don't need it on AFS. It's just the default location where
> pam_xauth stores it and no option is available to change this. The
> only solution (I see) is to write a xauth-wrapper, which can be
> passed to the pam_xauth via xauthpath=/path/to/xauth.

I have a patched sshd to do the right thing with .Xauthority (and
tickets and tolkens), so I do not need this, but this

http://devel.it.su.se/pub/jsp/polopoly.jsp?d=1026&a=23123

is probably something useful to run in the pam stack.

Harald.