(svn r4356) - NewGRF: Load more newstation properties.

newgrf_callbacks.h

@@ -41,6 +41,14 @@ enum VehicleCallbackMask {
 	CBM_SOUND_EFFECT   = 7, ///< Vehicle uses custom sound effects
 };
 
+/**
+ * Callback masks for stations.
+ */
+enum StationCallbackMask {
+	CBM_STATION_AVAIL = 0, ///< Availability of station in construction window
+	CBM_CUSTOM_LAYOUT = 1, ///< Use callback to select a tile layout to use
+};
+
 /**
  * Result of a failed callback.
  */