Bug#4338: sshd should support shadow passwords

[Marek Michalkiewicz <marekm@i17linuxb.ists.pwr.wroc.pl>]

Package: ssh
Version: 1.2.14-1

If compiled on a system which has no /etc/shadow file, sshd
doesn't support shadow passwords when using the password
authentication.  All the necessary code is already there (will
work with both shadow and non-shadow passwords) - all that is
needed is to hack the configure script a little so that it
defines HAVE_ETC_SHADOW in config.h.  (it should really check
for getspnam() instead of /etc/shadow, like GNU su does)

(Alternatively, just do "touch /etc/shadow" before building
the package.)

Marek