[Build] The Git-related macro no longer stops with an error when the build occurs in a non-Git directory.
[Build] The Git-related macro no longer stops with an error when the build occurs in a non-Git directory.

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