don't stop ART job on ERROR message, or IDPVM error
Allow test_run4_acts_ckf_ttbar_PU200.sh to continue to runIDPVM.py and dcube.py if there was an unignored ERROR, because the results might still be useful. Also, don't stop on runIDPVM.py error, just skip that job's dcube.py.
This is implemented as follows:
- don't stop job on
ERRORmessage (Reco_tf.pyreturn code 68) - don't stop job if there is an
runIDPVM.pyerror - just don't rundcube.pyon those results - final
exitcode is the first non-zero return code