This PR is intended as a demonstration of what I was talking about in number 731 and 732, and as such it only copies Iain's files from PR 731. I have not vetted the contents of the files. I don't know anything about the PowerPC architectures or what the files should look like for them.

Even if this PR is not pulled, I'd like to leave it up so I can point to it and say "this is what I mean" as I have consistently failed at explaining it.