geoip: improve log messages
geoip: improve log messages

list fixed with continent code first to improve readability
added ability to include city in logging

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