Bug#292191: upgrade changes ownerhsip of /var/spool/exim4

[( Marc A. Lehmann )]

Sorry for the mail flood. I responded to Marc's mail on my laptop, and tried
to cancel the mail, but unfortunately let it out. Please disregard it, I do
consider the issue understood, and settled.

-- 
                The choice of a
      -----==-     _GNU_
      ----==-- _       generation     Marc Lehmann
      ---==---(_)__  __ ____  __      pcg@goof.com
      --==---/ / _ \/ // /\ \/ /      http://schmorp.de/
      -=====/_/_//_/\_,_/ /_/\_\      XX11-RIPE