Test for locked account in auth.c (bug #442).

[Kevin Steves]

On Mon, Jan 13, 2003 at 08:59:17PM +1100, Darren Tucker wrote:
> > If we simplify to the point of 'strlen(passwd) < 13'
> 
> That is precisely what I was trying to avoid as it would stop valid use
> of public-key only authentication via existing no-password strings (eg
> "NP" on Solaris).

ah, i somehow missed that.  i'm not sure that differentiation is worth
the effort.  in the solaris case, ``passwd -sa'' displays both cases
as ``LK''.