behavior of passwordless logins has changed

[Tobias Nygren <tnn%NetBSD.org@localhost>]

Hi,

Previously an account with no password set would simply get logged in
without displaying a password prompt. Recently (after the heimdal
update?) it displays a password prompt, and accepts *any* password as
valid, not just the empty string. Also, "PermitEmptyPasswords yes"
doesn't seem to work from sshd_config anymore.

Kind regards,
-Tobias