Right. We're there.
*(list(lisp-implementation-type)(lisp-implementation-version)(machine-type)) ("SBCL" "0.6.13" "SPARC")
It passes most of the tests. It runs. It compiles files. What more do you want? Well, a certain amount of code clean-up and a forward port to 0.7.1, but apart from that...
Thank you, wnewman and dan. I've learnt a lot. Some of that I didn't want to know...