Update deb support in fallback code
    
    Add support for control.tar, control.tar.xz, data.tar, data.tar.xz,
    data.tar.bz2 (deprecated) and data.tar.lzma (deprecated), so that the
    fallback code is in line with current dpkg-deb.
    
    The deprecated members are supported because there might be such binary
    packages laying around.