* Resynchronise with Debian. Remaining changes: - debian/patches/950_ubuntu_charclass_highlight.diff: Enable URL highlighting. - debian/patches/Add 951_uxterm_utf8_title.diff: Set utf8Titles to true by default when using uxterm, so that it displays utf8 directories in titles properly. May cause issues with apps that use control sequences for updating the xterm titlebar - users should use xterm or set utf8Title to false in this case. - debian/gbp.conf: Use "Ubuntu" in "debian-branch" directly. - Use autotools-dev's debhelper integration to update config.guess/config.sub for each build.