[fluxus] frame hook

[Dave Griffiths]

> ok
>
> as soon as soon as i'm done with my work and my laptop is online again.
>
> i just wrote the shell mode in the train, but i finished it just when
> arrived at destination, so i haven't tested it yet. I actually wrote
> it twice because due to some weird behaviour of XCode i deleted my new
> files when trying to rename them (which was when I was just about to
> test how it worked). Second time it was easier and I could sort of
> refactor it LOL.
>
> one more random note: you used gh_* API of the guile everywhere which
> is deprecated in 1.6.x (or 1.6.7?). Is there any reason you did that?
> The bits i wrote use scm_* API and it shouldn't be the problem, except
> it can be confusing for the code readers.

I think I started writing it before the scm api, or at least before it was
fully functional, or maybe I was just bad :) We should move over if we're
staying with guile.

cheers,

dave