message: Add ifdef for compression in ex5
diff: @@ -269,7 +269,9 @@ int main(int argc, char *argv[])
  paraview_dc.SetLevelsOfDetail(order);
  paraview_dc.SetCycle(1);
  paraview_dc.SetDataFormat(VTUFormat::BINARY);
  +#ifdef MFEM_USE_GZSTREAM
  paraview_dc.SetCompression(true);
  +#endif
  paraview_dc.SetHighOrderOutput(true);
  paraview_dc.SetTime(0.0); // set the time
  paraview_dc.RegisterField("velocity",&u);
  