[development] wizard like multi part forms

[Karoly Negyesi]

Hi!

I got many requests about this with form API. In  
contributions/tricks/multipart you will find a module which does this. You  
will want to delete multipart_menu and multipart_submit and use  
multipart_fields, multipart_form_alter and _multipart_hide .

Any questions are welcome. If someone wants to add a link to handbooks,  
feel free.

Regards

NK