Bug#1142354: Acknowledgement (sshd-session built without crypt(), breaking UsePAM=no password auth)

> I think this part of your patch is a bit overkill, to be honest, and am
> inclined to leave it out.  We don't normally do this kind of
> double-checking of configure results at build time.  The autopkgtest
> makes sense though, and seems to be good enough to catch regressions in
> this kind of thing in future.
>
> Would you mind if I revised your patch to omit this part?  (No need to
> resend; I can make the adjustments myself.)

Thanks Colin.  No problem.  I wrote this test _before_ the more
complicated, (but arguably more valuable autopkgtest).
Feel free to amend as you see appropriate.

I also pushed the patch to a Gitlab fork to confirm the tests worked,
(outside the container I did my local testing in).
See https://salsa.debian.org/alexjfisher/openssh/-/jobs/9976488#L3041
for the autopkgtest job log.