GTA 3 was reverse-engineered, which is completely different from using leaked code. They wrote their own engine from scratch to use legally-purchased assets from the official game.
It's unlikely anyone would bother porting H&R to 3DS with the leaked code since the legal status would doom it from the start. A better route would be to write your own engine, which despite what Take Two want people to think, is completely legal.
It's probably possible, but given that the source code is leaked, even if there's nobody who could sue about it, it wont happen. That's because the 3ds homebrew devs are a bunch of pussies when it comes to copyright. While it's possible, unless the devs stop freaking out over copyright, it isnt gonna happen.
I was thinking about herb butter today, and that got me thinking, if there's herb butter, why isn't there a meat butter? Infusing butter with herbs is fine and all, but imagine infusing it with roast beef?
I have used this seasoning on all kinds of stuff, when combined with garlic it's great for garlic bread. In spaghetti sauce with some other seasonings it's great, on a turkey with butter and basil... Awesome. So flexible and delicious. Oh if you let it soak in some olive oil it's good for dipping bread.