* Resynchronize on Debian, the remaining delta for ubuntu is: * server_side_gradients.patch: don't use server side gradients, most drivers don't handle those and are really slow * cairo-lp-680628.patch: git backport to fix pdf printing speed issues * debian/patches/disable-flto-for-gcc-4.6: disable use of -flto when building. * Build tweaks for multiarch, enable the GL backend