enable plugin syntax checks for developers
enable plugin syntax checks for developers

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