Set default service interval and timetable flags for virtual trains

See: #636

src/train_cmd.cpp

@@ -7083,6 +7083,11 @@ Train* BuildVirtualRailVehicle(EngineID eid, StringID &error, uint32_t user, boo
 	v->reliability_spd_dec = e->reliability_spd_dec;
 	v->max_age = e->GetLifeLengthInDays();
 
+	v->SetServiceInterval(Company::Get(_current_company)->settings.vehicle.servint_trains);
+	v->SetServiceIntervalIsPercent(Company::Get(_current_company)->settings.vehicle.servint_ispercent);
+	SB(v->vehicle_flags, VF_AUTOMATE_TIMETABLE, 1, Company::Get(_current_company)->settings.vehicle.auto_timetable_by_default);
+	SB(v->vehicle_flags, VF_TIMETABLE_SEPARATION, 1, Company::Get(_current_company)->settings.vehicle.auto_separation_by_default);
+
 	v->railtype = rvi->railtype;
 	_new_vehicle_id = v->index;