[Conf] Improved the M4 (macro) files for OpenMPI.
[Conf] Improved the M4 (macro) files for OpenMPI.

airsim/simlfs,jwakely/airinv,airsim/simlfs,airsim/trademgen,airsim/airinv,airsim/trademgen,jwakely/rmol,jwakely/rmol,jwakely/airinv,airsim/airinv,airsim/tvlsim,jwakely/simfqt,airsim/trademgen,airsim/airinv,airsim/sevmgr,airsim/airinv,airsim/simfqt,jwakely/trademgen,airsim/rmol,airsim/airinv,jwakely/simcrs,airsim/tvlsim,jwakely/airrac,jwakely/rmol,airsim/airinv,jwakely/travelccm,airsim/avlcal,airsim/rmol,airsim/airinv,airsim/stdair,jwakely/airinv,airsim/travelccm,airsim/tvlsim,jwakely/simfqt,jwakely/airrac,airsim/avlcal,airsim/tvlsim,airsim/avlcal,airsim/simcrs,airsim/tvlsim,airsim/tvlsim,jwakely/airinv,airsim/airtsp,jwakely/simcrs,jwakely/trademgen,airsim/avlcal,jwakely/simcrs,jwakely/simfqt,airsim/airinv,jwakely/airrac,airsim/simcrs,jwakely/airinv,airsim/rmol,airsim/simlfs,airsim/airrac,airsim/simfqt,airsim/sevmgr,jwakely/airinv,jwakely/travelccm,airsim/tvlsim,airsim/stdair,jwakely/airinv,jwakely/airinv,airsim/airrac,jwakely/trademgen,airsim/stdair,airsim/simfqt,airsim/tvlsim,jwakely/airinv,airsim/airinv,airsim/travelccm,airsim/tvlsim,airsim/simcrs,airsim/sevmgr,airsim/rmol,jwakely/rmol,airsim/airtsp,airsim/airrac