[Qt] PQtPoint, Menus and Qt IDE

[zeljko at holobit.net]

> I see this as a solution. And we could also only create the qmdiarea

Agree, but my expirience with qt&mdi says that there could be some  
event based issues (especially repainting things), on the other side,  
there was a good reason why trolltech go away from QWorkspace to  
QMdiArea class (4.3). I hope that they polished those things  
(especially because I've seen code which can disallow new mdi windows  
to be maximized by default if there's already maximized MDI child ;) ).

> if the form is indeed a mdiform.

Of course, that's why I've inserted $ifdef mdidevel with first mdi patch.