message: switch printout based on template used
diff: @@ -2497,9 +2497,16 @@ static void JacobiDispatch(const Vector &b, const Vector &x0, Vector &x1,
  x1p[i] = x0p[i] + sc * resi / norm;
  }
  else
  + {
  + if (useFabs)
  {
  MFEM_ABORT_KERNEL("L1 norm of row is zero.");
  }
  + else
  + {
  + MFEM_ABORT_KERNEL("sum of row is zero.");
  + }
  + }
  });
  }
  