Some progress towards compilation of ARAP with a seam_mesh

Most of the issues come from the incomplete seam_mesh graph traits now.

Surface_mesh_parameterization/examples/Surface_mesh_parameterization/parameterization_tests.cpp

@@ -8,6 +8,7 @@
 #include <CGAL/boost/graph/graph_traits_Polyhedron_3.h>
 
 #include <CGAL/boost/graph/Seam_mesh.h>
+#include <CGAL/boost/graph/graph_traits_Seam_mesh.h>
 
 #include <CGAL/ARAP_parameterizer_3.h>
 #include <CGAL/Barycentric_mapping_parameterizer_3.h>

Surface_mesh_parameterization/include/CGAL/ARAP_parameterizer_3.h

@@ -246,10 +246,16 @@ private:
       // This fixes two vertices that are far in the original geometry
 
       // A local uvmap (that is then discarded) is passed to avoid changing
-    // the values of the real uvmap
-    CGAL::Unique_hash_map<vertex_descriptor, Point_2> useless_uvmap;
+      // the values of the real uvmap. Since we can't get VertexUVMap::C,
+      // we build a map with the same key and value type
+      typedef boost::unordered_map<typename VertexUVMap::key_type,
+                                   typename VertexUVMap::value_type> Useless_map;
+      typedef boost::associative_property_map<Useless_map>           Useless_pmap;
+
+      Useless_map useless_map;
+      Useless_pmap useless_uvpmap(useless_map);
       status = get_border_parameterizer().parameterize_border(mesh, bhd,
-                                                            VertexUVMap(useless_uvmap),
+                                                              useless_uvpmap,
                                                               vpmap);
     }