(svn r19341) -Codechange: Move GOINGUP/GOINGDOWN flags to GroundVehicle.

-Codechange: Move GetSlopeResistance to GroundVehicle.

src/saveload/afterload.cpp

@@ -2072,6 +2072,18 @@ bool AfterLoadGame()
 				st->airport.h = st->GetAirportSpec()->size_y;
 			}
 		}
+
+		Train *t;
+		FOR_ALL_TRAINS(t) {
+			/* Copy old GOINGUP / GOINGDOWN flags. */
+			if (HasBit(t->flags, 1)) {
+				ClrBit(t->flags, 1);
+				SetBit(t->gv_flags, GVF_GOINGUP_BIT);
+			} else if (HasBit(t->flags, 2)) {
+				ClrBit(t->flags, 2);
+				SetBit(t->gv_flags, GVF_GOINGDOWN_BIT);
+			}
+		}
 	}
 
 	/* Road stops is 'only' updating some caches */

src/saveload/vehicle_sl.cpp

@@ -544,6 +544,7 @@ const SaveLoad *GetVehicleDescription(VehicleType vt)
 		 SLE_CONDVAR(Train, wait_counter,        SLE_UINT16,                 136, SL_MAX_VERSION),
 
 		SLE_CONDNULL(2, 2, 19),
+		 SLE_CONDVAR(Train, gv_flags,            SLE_UINT16,                 139, SL_MAX_VERSION),
 		/* reserve extra space in savegame here. (currently 11 bytes) */
 		SLE_CONDNULL(11, 2, SL_MAX_VERSION),