Merge branch 'master' into jgrpp

bin/ai/regression/tst_regression/main.nut

@@ -1690,6 +1690,9 @@ function Regression::Vehicle()
 	print("  BuildVehicle():       " + AIVehicle.BuildVehicle(10008, 9));
 	print("  BuildVehicle():       " + AIVehicle.BuildVehicle(10008, 27));
 	print("  BuildVehicle():       " + AIVehicle.BuildVehicle(10008, 27));
+	print("  IsValidVehicle(17):   " + AIVehicle.IsValidVehicle(17));
+	print("  IsValidVehicle(18):   " + AIVehicle.IsValidVehicle(18));
+	print("  IsValidVehicle(19):   " + AIVehicle.IsValidVehicle(19)); // 19 is immediately joined to 18
 	print("  MoveWagonChain():     " + AIVehicle.MoveWagonChain(18, 0, 17, 0));
 	print("  GetNumWagons():       " + AIVehicle.GetNumWagons(17));
 	print("  GetLength():          " + AIVehicle.GetLength(17));

bin/ai/regression/tst_regression/result.txt

@@ -9115,6 +9115,9 @@ ERROR: IsEnd() is invalid as Begin() is never called
   BuildVehicle():       17
   BuildVehicle():       18
   BuildVehicle():       19
+  IsValidVehicle(17):   true
+  IsValidVehicle(18):   true
+  IsValidVehicle(19):   false
   MoveWagonChain():     true
   GetNumWagons():       3
   GetLength():          24