[development] fixing nodeapi : programmatically submitting forms.

[Moshe Weitzman]

> But I can't think we want to compile all forms just to display one of 
> them. That'd be quite a bit slow...

thats a good point. but i don't think it would be slow. we just have to keep 
a one dimensional array of paths. we don't have to do any fancy hierarchy 
stuff like hook_menu(), so i don't see this hook being any more expensive 
than all our other hooks. it is roughly as expensive as hook_link(), for 
example.