Merge branch 'master' into jgrpp

# Conflicts:
#	src/lang/english.txt
#	src/map_type.h
#	src/network/network_command.cpp
#	src/object_cmd.cpp
#	src/rail_cmd.cpp
#	src/road_cmd.cpp
#	src/road_func.h
#	src/saveload/afterload.cpp
#	src/saveload/saveload.h
#	src/settings_gui.cpp
#	src/string.cpp
#	src/table/road_land.h
#	src/table/settings/game_settings.ini
#	src/table/settings/world_settings.ini
#	src/tbtr_template_gui_main.h
#	src/train_cmd.cpp

src/settings.cpp

@@ -2019,7 +2019,7 @@ static GRFConfig *GRFLoadConfig(IniFile &ini, const char *grpname, bool is_stati
 				SetDParam(1, STR_CONFIG_ERROR_INVALID_GRF_UNKNOWN);
 			}
 
-			SetDParamStr(0, StrEmpty(filename) ? item->name : filename);
+			SetDParamStr(0, StrEmpty(filename) ? item->name.c_str() : filename);
 			ShowErrorMessage(STR_CONFIG_ERROR, STR_CONFIG_ERROR_INVALID_GRF, WL_CRITICAL);
 			delete c;
 			continue;