Add hardcoded mapping between postfix's cleanup errors and corresponding  Qpsmtpd::DSN value.  (David Muir Sharnoff)
Add hardcoded mapping between postfix's cleanup errors and corresponding 
Qpsmtpd::DSN value.  (David Muir Sharnoff)

git-svn-id: 147be7c129bc63f40d944fca2b9c2c0732b16c5a@667 958fd67b-6ff1-0310-b445-bb7760255be9

gh/ghqp,gh/ghqp