Ugh... Qt4 porting

[Mosfet]

I hate to say it, but now I am beginning to feel that TrollTech is changing 
things just to be difficult :P

I just updated from Qt4beta2 to today's snapshot. A ton of stuff has changed 
with QImage.

Trivial changes include no longer using convertDepth() but a format enum. 
There is no longer a create method either, the only way I can see to allocate 
an empty image is to assign it from another one. Not ideal, but I can deal 
with it.

More important is they dropped the jump table, which is used a lot. I'm really 
not getting some of these changes... Along with other things being dropped 
Qt4 seems to be getting worse as time goes by.

If TrollTech people are reading this: restore the jump table and not just as a 
Qt3 support method! And box layout widgets while your at it ;-) And margins 
and spacings in GridLayout constructors... and ... sigh.

Obviously, I won't be done by Monday. I'll post when I am.