Include labels if not lattice polytope is not fully-dimensional.
Trac #16669: Lattice automorphism group forgets labels

The lattice automorphism group forgets its point labels if the polytope
is not full-dimensional.

{{{
sage: from sage.geometry.polyhedron.ppl_lattice_polytope import
LatticePolytope_PPL
sage: lp = LatticePolytope_PPL((1,0,0),(0,1,0),(-1,-1,0))
sage: lp.lattice_automorphism_group(point_labels=(0,1,2))
Permutation Group with generators [(), ((0,1),(1,0)), ((-1,-1),(0,1)),
((-1,-1),(0,1),(1,0)), ((-1,-1),(1,0),(0,1)), ((-1,-1),(1,0))]
}}}

URL: http://trac.sagemath.org/16669
Reported by: jkeitel
Ticket author(s): Jan Keitel
Reviewer(s): Volker Braun