[development] fixing nodeapi : programmatically submitting forms.

[Nedjo Rogers]

> if we implement this , you could just do a hook_forms call, and do  json 
> conversions by just calling
> the form callback.
>
> much much simpler.

Indeed. I've done a similar redirection of form submission in the 
ajaxsubmit.module (part of Javascript Tools), where we set a form element 
which triggers the submit to be redirected to a JSON callback. It required 
some fancy footwork to handle previews vs. submits with errors vs. 
successful submits. Functional, but again the planned approach would 
simplify AJAX submissions as well.