some modification, because problem of switch with ghost

HySoP/hysop/operator/differentialOperator.py

HySoP/hysop/operator/differentialOperator_d.py

HySoP/hysop/operator/fct2op.py

HySoP/hysop/operator/penalization_d.py

HySoP/hysop/operator/stretching_d.py

HySoP/hysop/test/test_operator/test_CondStability.py

HySoP/hysop/test/test_operator/test_DivProduct.py

HySoP/hysop/test/test_operator/test_Penalization.py

HySoP/hysop/tools/cpu_data_transfer.py