4.7p1 password auth broken on SCO OSR6

[Roger Cornelius]

openssh 4.7p1
SCO OSR6

Password authentication is non-functional.  This seems dependent on
USE_LIBIAF which further depends on HAVE_LIBIAF (in defines.h), but
there is no longer any code in configure to define the latter.  Building
with HAVE_LIBIAF defined enables password authentication, but only for
non-long (<9 char) passwords, even though UNIXWARE_LONG_PASSWORDS seems
to be defined.  I haven't had time yet to investigate further.
-- 
Roger Cornelius        rac at tenzing.org