Copy all lines of incoming message to spool file and keep track of
where the body lines started (ease use of inplace scanning for
viruses).
* lib/Qpsmtpd/Transaction.pm
New function body_start() to get/set the body in spool file
Tweak body_resetpos() and body_getline() to use body_start instead of 0
git-svn-id: https://svn.perl.org/qpsmtpd/trunk@375 958fd67b-6ff1-0310-b445-bb7760255be9