At the risk of sounding crass, who cares? If LucasArts cares, they'll send a DMCA to GitHub. Software from 1993 isn't depriving them of any profit and it's being shared for educational reasons. (it's not even the game itself) Preemptively freaking out over copyright is exactly what the MPAA wants you to do: they want you to forget that it's your right to share things. This has a chilling effect that we should avoid lest we enter a cultural black hole where we can only confidently share anything published before 1923.