[Fluxus] commits

[Dave Griffiths]

* added set-help-locale! for runtime switching of languages - eg
(set-help-locale! "pt") in your .fluxus.scm. helpmap.scm now contains
function docs for all languages, rather than just one.

* added section/function browsing
finally a way of browsing the functions available while scripting:

The idea is that you can find a function you are interested 
in by doing something like this:

(help "sections")
   ... list of sections ...
(help "maths")
   ... description and list of maths functions ...
(help "vmul")
   ... details about the function with example ...

* error-clear-thing fixed (where some errors resulted in a lack of frame
clearing, resulting in helpfully unreadable text)

* load/save dialogs fixed

cheers,

dave