geoip: improve log messages
geoip: improve log messages

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

msimerson/qpsmtpd,sieutruc/qpsmtpd,salvis/qpsmtpd,salvis/qpsmtpd,sentinelleader/qpsmtpd-dev,smtpd/qpsmtpd,priyadi/qpsmtpd,priyadi/qpsmtpd,priyadi/qpsmtpd,smtpd/qpsmtpd,msimerson/qpsmtpd,sieutruc/qpsmtpd,sentinelleader/qpsmtpd-dev,sieutruc/qpsmtpd