That, too should be there, because xorriso depends on the libisoburn1 package. It's in my jessie at /usr/lib/libisoburn.so.1.
Something is non-standard about your installation. What steps did you take to remove systemd? (And what were you starting with? Testing netinstall? Upgrade from wheezy?)
apt-get install libisoburn1
or maybe..
apt-get -f install
(with no packages)