[Fluxus] drflux fixes/problems

[fra]

Thanks Mr. Gabor,
now i'm able to use fluxus in racket.

Trying some examples from fluxus, i have some errors like

 ../../../../../usr/local/lib/fluxus-018/input.ss:85:11: vector-set!:
expects type <non-negative exact integer> as 2nd argument, given: -1;
other arguments were: '#(#t #f #f) #f

here was random.scm example, but happened in some other example.
Hope this could be useful for You, and if the case i could report
all errors i find!

And a stupid thing, in drflux.ss row 27, there is fluxus version 0.16.
(as i said a stupid thing).

Thank You,
ciao,
francesco.