message: DBG_MPI instead of MPI
diff: @@ -60,12 +60,12 @@ inline void dbg_F_L_F_N_A(const char *file, const int line,
  static bool env_dbg = false;
  if (!env_ini)
  {
  - mpi = getenv("MPI");
  + mpi = getenv("DBG_MPI");
  #ifdef MFEM_USE_MPI
  if (mpi) { MPI_Comm_rank(MPI_COMM_WORLD, &mpi_rank); }
  #endif
  env_dbg = getenv("DBG");
  - mpi_dbg = atoi(mpi?getenv("MPI"):"0");
  + mpi_dbg = atoi(mpi?getenv("DBG_MPI"):"0");
  env_ini = true;
  }
  if (!env_dbg) { return; }
  