First thing I'd like to say is that this is more of an "example" than an "engine". To upgrade that status, the least you'll have to do is add a description of how someone can stick this into their own game, and of course mention that it relies on my movement engine.
It wouldn't be too hard to examine your .gm6, see how it was made, and copy or recreate that in another game, but that makes your file an "example".
Anyways, same crits as Scooternew, plus I tried jumping off the right side a bunch of times, and one time Link got stuck partly in the wall when he landed.
Other than that it's a lot better than I expected. I've seen a few other jump-off-cliff examples and they sucked goat.