Don't do printf interpolation on config('me')
Don't do printf interpolation on config('me')

The code feeds the results of $session->config('me') to
sprintf as part of the format string. In practice, this is
probably not a problem since hostnames don't contain percent
signs. However, it triggers a taint warning in perl 5.10,
making cram-md5 auth unusable.

This patch rewrites the sprintf to insert the 'me' value
using a %s format specifier.

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