test: Add infrastructure to test without --castxml-start option
test: Add infrastructure to test without --castxml-start option

iMichka/CastXML,CastXML/CastXML,CastXML/CastXML,CastXML/CastXML,ellert/CastXML,thewtex/CastXML,ellert/CastXML,bradking/CastXML,thewtex/CastXML,thewtex/CastXML,ellert/CastXML,bradking/CastXML,bradking/CastXML,iMichka/CastXML