* Merge from Debian unstable. Remaining changes: - debian/patches/do-not-install-debfoster-into-chroots.patch: do not install debfoster into the chroots because it is in universe and not needed for package building itself. - debian/patches/run-pre-build-hooks-as-root.patch: run pre-build hooks as root. - Convert package back to source format 3.0 (quilt) so the patches get applied.