Making the GPL more scary

Pretty much NO licences allow relicensing. They allow distributing under a different licence, which isn't the same thing.

If I take a BSD project, rewrite some of it, and redistribute, then it's perfectly okay to do so under the GPL. That doesn't change the licence of the code I borrowed - that *was* BSD, is *still* BSD, and will *remain* BSD. It's just that the project is now GPL and the safest option for recipients (unless they want a ton of work) is to abide by the GPL.

Cheers,
Wol