Merge branch 'master' into jgrpp-nrt

Merge trunk multiple docks implementation

# Conflicts:
#	docs/landscape_grid.html
#	src/order_cmd.cpp
#	src/pathfinder/npf/npf.cpp
#	src/pathfinder/yapf/yapf_ship.cpp
#	src/rail_cmd.cpp
#	src/saveload/afterload.cpp
#	src/saveload/oldloader_sl.cpp
#	src/saveload/station_sl.cpp
#	src/script/api/script_order.cpp
#	src/ship_cmd.cpp
#	src/station.cpp
#	src/station_base.h
#	src/station_cmd.cpp
#	src/tunnelbridge_cmd.cpp

src/station_func.h

@@ -41,6 +41,10 @@ void StationPickerDrawSprite(int x, int y, StationType st, RailType railtype, Ro
 bool HasStationInUse(StationID station, bool include_company, CompanyID company);
 
 void DeleteOilRig(TileIndex t);
+void UpdateStationDockingTiles(Station *st);
+void RemoveDockingTile(TileIndex t);
+void ClearDockingTilesCheckingNeighbours(TileIndex tile);
+bool IsValidDockingDirectionForDock(TileIndex t, DiagDirection d);
 
 /* Check if a rail station tile is traversable. */
 bool IsStationTileBlocked(TileIndex tile);