* Merge with Debian; remaining changes: - Build gnutls-bin from this source package rather than from gnutls28: gnutls28's licensing is currently too strict for many of the free software packages built against it in Ubuntu main and we only want to support a single version. Bump its version to achieve this. - Drop the sipsak Breaks on armhf back to (<= 0.9.6-2.1), which is sufficient for Ubuntu. The former versioning rendered sipsak uninstallable. - Link test-lock and test-thread_create with -Wl,--no-as-needed; see https://lists.gnu.org/archive/html/bug-gnulib/2013-10/msg00017.html. - debian/patches/99_update-libtool.patch: Update libtool.m4 - debian/rules: Set CC on cross-builds, so autoconf doesn't lose its mind.