kerb-set-password-00 implementation?

[Derrick J Brashear <shadow@dementia.org>]

There's an AD code sample distributed by Microsoft which implements this,
but it wants to build against MIT krb5. I want to build against Heimdal.

It shouldn't be that hard to write, but I don't see any point in doing it
if someone else already has. Has anyone?

-D