Since we could not resolve the AppArmor shutdown issue so far, at least add a warning about it
Drop AppArmor installation from Debian/Ubuntu package
Bump compat to 9, standards version to 3.9.5
Merge remote-tracking branch 'Shnatsel/master'

* Shnatsel/master:
  Bump compat to 9, standards version to 3.9.5
  Drop AppArmor installation from Debian/Ubuntu package
  Since we could not resolve the AppArmor shutdown issue so far, at least add a warning about it