Cabal + WinHugs + Windows + No C Compiler

[Neil Mitchell]

> Ah, the answers (except for where Hugs puts program modules) are all
> in the table in section 3.1.2.1 of the Cabal User's Guide.  We just
> need to adapt prefixFromBinDir for Hugs.  (For Hugs, we might as well
> have prefix-independence under Unix too.)  I might have a go at that
> some time, but someone else will need to test it under Windows.

I am happy to test, feel free to either shove it in the repo, or mail
me a darcs patch and I'll try it out.

Thanks

Neil