message: Add the missing (not implemented) MarkEdge function
diff: @@ -77,6 +77,9 @@ public:
  because the order may be used later for setting the edges. **/
  virtual void MarkEdge(const DSTable &v_to_v, const int *length);
  + /// Mark the longest edge by assuming/changing the order of the vertices.
  + virtual void MarkEdge(DenseMatrix &pmat) { MFEM_ABORT("not implemented"); }
  +
  virtual void ResetTransform(int tr) { transform = tr; }
  virtual unsigned GetTransform() const { return transform; }
  