added dpcg_for_cg_nrordr which has no reordering of coeff. matrix A, then there is dpcg_for_cg_old that preserves the older version. The current version with reorder is now in dpcg_for_dg.cpp. To get the results in the report about pauliens' work rename _nrordr* to dpcg_for_dg* and the current verion to filenames ending with _rordr.