message: Remove ambiguous overloaded VectorDiffusionIntegrator
diff: @@ -2676,7 +2676,7 @@ public:
  VectorDiffusionIntegrator(Coefficient &q)
  : Q(&q) { }
  - VectorDiffusionIntegrator(Coefficient &q, const IntegrationRule *ir = NULL)
  + VectorDiffusionIntegrator(Coefficient &q, const IntegrationRule *ir)
  : BilinearFormIntegrator(ir), Q(&q) { }
  /** \brief Integrator with scalar coefficient for caller-specified vector
  