message: switch to Rhp in the TrueTransferOperator
diff: @@ -1439,7 +1439,7 @@ TrueTransferOperator::TrueTransferOperator(const FiniteElementSpace& lFESpace_,
  localTransferOperator = new TransferOperator(lFESpace_, hFESpace_);
  P = lFESpace.GetProlongationMatrix();
  - R = hFESpace.GetRestrictionMatrix();
  + R = hFESpace.GetHpRestrictionMatrix();
  // P and R can be both null
  // P can be null and R not null
  