Merge branch 'master' into jgrpp

# Conflicts:
#	config.lib
#	projects/openttd_vs140.vcxproj
#	projects/openttd_vs140.vcxproj.filters
#	projects/openttd_vs141.vcxproj
#	projects/openttd_vs141.vcxproj.filters
#	projects/openttd_vs142.vcxproj
#	projects/openttd_vs142.vcxproj.filters
#	src/aircraft_cmd.cpp
#	src/base_station_base.h
#	src/core/pool_type.hpp
#	src/disaster_vehicle.cpp
#	src/economy.cpp
#	src/engine.cpp
#	src/group.h
#	src/group_cmd.cpp
#	src/group_gui.cpp
#	src/lang/english.txt
#	src/lang/german.txt
#	src/linkgraph/linkgraph_gui.cpp
#	src/network/network_command.cpp
#	src/network/network_server.cpp
#	src/openttd.cpp
#	src/order_cmd.cpp
#	src/road_cmd.cpp
#	src/saveload/afterload.cpp
#	src/saveload/cargopacket_sl.cpp
#	src/saveload/linkgraph_sl.cpp
#	src/saveload/order_sl.cpp
#	src/saveload/station_sl.cpp
#	src/saveload/town_sl.cpp
#	src/saveload/vehicle_sl.cpp
#	src/screenshot.cpp
#	src/screenshot.h
#	src/settings_gui.cpp
#	src/settings_type.h
#	src/smallmap_gui.cpp
#	src/station.cpp
#	src/station_cmd.cpp
#	src/table/settings.ini
#	src/toolbar_gui.cpp
#	src/town_cmd.cpp
#	src/train.h
#	src/train_cmd.cpp
#	src/train_gui.cpp
#	src/vehicle.cpp
#	src/vehicle_base.h
#	src/vehiclelist.cpp
#	src/window_type.h

src/base_station_base.h

@@ -187,8 +187,6 @@ struct BaseStation : StationPool::PoolItem<&_station_pool> {
 	void FillCachedName();
 };
 
-#define FOR_ALL_BASE_STATIONS(var) FOR_ALL_ITEMS_FROM(BaseStation, station_index, var, 0)
-
 /**
  * Class defining several overloaded accessors so we don't
  * have to cast base stations that often
@@ -276,10 +274,13 @@ struct SpecializedStation : public BaseStation {
 		assert(IsExpected(st));
 		return (const T *)st;
 	}
+
+	/**
+	 * Returns an iterable ensemble of all valid stations of type T
+	 * @param from index of the first station to consider
+	 * @return an iterable ensemble of all valid stations of type T
+	 */
+	static Pool::IterateWrapper<T> Iterate(size_t from = 0) { return Pool::IterateWrapper<T>(from); }
 };
 
-#define FOR_ALL_BASE_STATIONS_OF_TYPE(name, var) \
-	for (size_t station_index = 0; var = nullptr, station_index < name::GetPoolSize(); station_index++) \
-		if ((var = name::GetIfValid(station_index)) != nullptr)
-
 #endif /* BASE_STATION_BASE_H */