Merge tag '14.0-beta3' into jgrpp

# Conflicts:
#	regression/regression/result.txt
#	src/industrytype.h
#	src/network/core/config.h
#	src/network/core/network_game_info.cpp
#	src/network/core/network_game_info.h
#	src/network/core/packet.cpp
#	src/network/core/packet.h
#	src/network/core/tcp.cpp
#	src/network/core/tcp.h
#	src/network/core/tcp_admin.cpp
#	src/network/core/tcp_content.cpp
#	src/network/core/tcp_coordinator.cpp
#	src/network/core/tcp_game.cpp
#	src/network/core/tcp_game.h
#	src/network/core/tcp_turn.cpp
#	src/network/core/udp.cpp
#	src/network/core/udp.h
#	src/network/network_admin.cpp
#	src/network/network_client.cpp
#	src/network/network_client.h
#	src/network/network_command.cpp
#	src/network/network_content.cpp
#	src/network/network_internal.h
#	src/network/network_query.cpp
#	src/network/network_query.h
#	src/network/network_server.cpp
#	src/network/network_server.h
#	src/network/network_turn.cpp
#	src/network/network_udp.cpp
#	src/rail_gui.cpp
#	src/road_gui.cpp

src/script/api/script_text.hpp

@@ -136,8 +136,11 @@ private:
 		StringID owner;
 		int idx;
 		Param *param;
+		bool used;
 
-		ParamCheck(StringID owner, int idx, Param *param) : owner(owner), idx(idx), param(param) {}
+		ParamCheck(StringID owner, int idx, Param *param) : owner(owner), idx(idx), param(param), used(false) {}
+
+		void Encode(std::back_insert_iterator<std::string> &output);
 	};
 
 	using ParamList = std::vector<ParamCheck>;