* apt-pkg/packagemanager.{cc,h}:

  - propergate the Immediate flag to make hitting the
    "E: Internal Error, Could not perform immediate configuration (2)"
    harder
* debian/control:
  - build against libdb-dev (instead of libdb4.4-dev)
* merged the apt--DoListUpdate branch, this provides a common interface
  for "apt-get update" like operations for the frontends and also provides
  hooks to run stuff in APT::Update::{Pre,Post}-Invoke