Recoded how 'handles' were implemented; these were extra wireframe edges

actually, adding vertices and edges to displist.

Now the subsurfer gives editvertices a pointer to the subsurfed vertex
location; allowing not only vertices in 'optimal' draw to show correct, but
also gives proper handling of borderselect and lasso for edges. :)

source/blender/include/BDR_drawobject.h

@@ -50,9 +50,10 @@ void helpline(float *vec);
 void drawaxes(float size);
 void drawcamera(struct Object *ob);
 
+extern int subsurf_optimal(struct Object *ob);
+
 void calc_mesh_facedots_ext(void);
 void calc_lattverts_ext(void);
-void calc_meshverts(void);
 void calc_meshverts_ext(void);
 void calc_meshverts_ext_f2(void);
 void calc_nurbverts_ext(void);