message about incorrect password. It is only chance to bring it
to user attention since 99% pop clients don't know about s/key
existance and do not prompt for s/key BEFORE sending password.
As result of this patch netscape allows reenter with valid
s/key now, i.e. it shows needed s/key info in password reentering box
after trying first time with incorrect one.
Move pop.auth database to ${PREFIX}/etc/popper/pop.auth so that it
(a) does not conflict with MH's pop3 database of same name, and (b)
so that ${PREFIX}/etc/popper directory can be owned by pop uid so
that popauth -init always works.
This should cover the last nits regarding this port.
Requested by: asami
