* Merge from debian unstable, remaining changes:
  - 03_branding.dpatch: ubuntu branding
  - 04_changelog.dpatch: take changelogs from changelogs.ubuntu.com
  - 07_hide_recommends_warning.dpatch: do not show a warning about
    missing recommends
  - 11_gxx43.dpatch:build tests without -Werror
  - 09_ubuntu_fortify_source.dpatch: Suppress a number of warnings (turned
    into errors by -Werror) triggered by Ubuntu's default of
    -D_FORTIFY_SOURCE=2.
  - make aptitude-doc to Suggests
* rebuild against latest libapt