WINTERMUTE: Save the names of any language files that are loaded. (Fix bug #6651)

This way, they will be reloaded in the same order when loading a save game. Old save games will
continue to show the bug, but new savegames will be consistent. A quick fix for old save games in
the white chamber, is to launch the game with the correct language BEFORE loading the save game.

This increases the save-game-version to 1.3.1ScummVM