Temporary change to be backward compatible with bezier serialization

Arrangement_on_surface_2/include/CGAL/Arr_geometry_traits/Bezier_curve_2.h

@@ -442,6 +442,12 @@ public:
    * Check if both curve handles refer to the same object.
    */
   bool is_same (const Self& bc) const
+  {
+    return *this == bc;
+    // TODO: use identical instead!
+  }
+
+  bool operator==(const Self& bc) const
   {
     if (this->identical(bc))
       return true;