Merge branch 'lifetime_profit-sx' into jgrpp

Conflicts:
	src/saveload/afterload.cpp
	src/saveload/extended_ver_sl.cpp
	src/saveload/extended_ver_sl.h
	src/vehicle_gui.cpp

src/saveload/afterload.cpp

@@ -3197,6 +3197,12 @@ bool AfterLoadGame()
 		}
 	}
 
+	/* Set lifetime vehicle profit to 0 if lifetime profit feature is missing */
+	if (SlXvIsFeatureMissing(XSLFI_VEH_LIFETIME_PROFIT)) {
+		Vehicle *v;
+		FOR_ALL_VEHICLES(v) v->profit_lifetime = 0;
+	}
+
 	/* Road stops is 'only' updating some caches */
 	AfterLoadRoadStops();
 	AfterLoadLabelMaps();