compartment lighting vehicle subsystem, submodel diffuse impact on ambient lighting, minor gfx renderer bug fixes, minor ai logic tweaks

translation.h

@@ -191,6 +191,9 @@ enum string {
     cab_timetablelight_sw,
     cab_cablight_sw,
     cab_cablightdim_sw,
+    cab_compartmentlights_sw,
+    cab_compartmentlightson_sw,
+    cab_compartmentlightsoff_sw,
     cab_battery_sw,
     cab_batteryon_sw,
     cab_batteryoff_sw,