Merge branch 'master' into jgrpp

# Conflicts:
#	src/autoreplace_cmd.cpp
#	src/build_vehicle_gui.cpp
#	src/cargotype.cpp
#	src/economy.cpp
#	src/engine_gui.cpp
#	src/industry_cmd.cpp
#	src/industry_gui.cpp
#	src/linkgraph/linkgraph_gui.h
#	src/linkgraph/refresh.cpp
#	src/linkgraph/refresh.h
#	src/newgrf.cpp
#	src/newgrf_airporttiles.h
#	src/newgrf_roadstop.cpp
#	src/newgrf_station.cpp
#	src/newgrf_station.h
#	src/order_base.h
#	src/order_cmd.cpp
#	src/order_func.h
#	src/order_gui.cpp
#	src/pathfinder/pathfinder_type.h
#	src/saveload/afterload.cpp
#	src/subsidy_base.h
#	src/vehicle_cmd.cpp
#	src/vehicle_gui.cpp
#	src/vehicle_gui_base.h

src/subsidy_base.h

@@ -20,7 +20,7 @@ extern SubsidyPool _subsidy_pool;
 
 /** Struct about subsidies, offered and awarded */
 struct Subsidy : SubsidyPool::PoolItem<&_subsidy_pool> {
-	CargoID cargo_type;  ///< Cargo type involved in this subsidy, CT_INVALID for invalid subsidy
+	CargoID cargo_type;  ///< Cargo type involved in this subsidy, INVALID_CARGO for invalid subsidy
 	uint16_t remaining;  ///< Remaining months when this subsidy is valid
 	CompanyID awarded;   ///< Subsidy is awarded to this company; INVALID_COMPANY if it's not awarded to anyone
 	SourceType src_type; ///< Source of subsidised path (SourceType::Industry or SourceType::Town)