Add guidelines for commit messages
Add guidelines for commit messages

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