auth_chkpw: added pass|fail prefix to log msgs
auth_chkpw: added pass|fail prefix to log msgs

sieutruc/qpsmtpd,priyadi/qpsmtpd,sieutruc/qpsmtpd,priyadi/qpsmtpd,msimerson/qpsmtpd,msimerson/qpsmtpd,priyadi/qpsmtpd,smtpd/qpsmtpd,salvis/qpsmtpd,smtpd/qpsmtpd,sieutruc/qpsmtpd,salvis/qpsmtpd