* Resynchronise with Debian (STANZAS addition fixes LP: #435376). Remaining changes: - Use and depend on the Ubuntu keyring. - Enable the restricted component by default, unless apt-setup/restricted is preseeded to false. - Set up the default sources.list to look in -updates and -security (the latter from apt-setup/security_host) as well as the unadorned suite; also -proposed if apt-setup/proposed is true. - Use Ubuntu kernel image names. - Allow preseeding base-installer/kernel/override-image to force a given kernel to be used. - Install busybox-initramfs rather than busybox. - Revert Joey's patch to call base-installer.d hooks after running debootstrap, which broke console-setup's expectation of being able to insert its configuration file into /target before console-setup is installed by debootstrap. - Add armel/imx51 and armel/dove subarchitectures. - Prefer PAE kernels on machines with >3GB of RAM.