* mln/topo/complex.hh
	(connect_(const n_face<N, D>&, const n_face<N + 1, D>&)):
	Turn method into...
	(connect_(const algebraic_n_face<N, D>&, const n_face<N + 1, D>&)):
	...this.
	(complex<D>::add_face): Adjust.
	(internal::lower_dim_faces_set_mixin<N, D>::print)
	(higher_dim_faces_set_mixin<N, D>::print):
	Adjust.
	* mln/topo/face_data.hh: Adjust friends.
	(internal::lower_dim_faces_data_mixin<N, D>::lower_dim_faces_type)
	(internal::higher_dim_faces_data_mixin<N, D>::higher_dim_faces_type):
	New typedefs.
	Use them as types of...
	(internal::lower_dim_faces_data_mixin<N, D>::lower_dim_faces_)
	(internal::higher_dim_faces_data_mixin<N, D>::higher_dim_faces_):
	...these members.
	(internal::lower_dim_faces_data_mixin<N, D>::connect_lower_dim_face)
	(internal::higher_dim_faces_data_mixin<N, D>::connect_higher_dim_face):
	Convert to algebraic n-faces.

git-svn-id: https://svn.lrde.epita.fr/svn/oln/branches/cleanup-2008@2663 4aad255d-cdde-0310-9447-f3009e2ae8c0