MDI fix attempt

[Krzysztof Foltman]

Dmitry Timoshkov wrote:

> Then perhaps you have a +relay trace which exposes a problem and could
> write a simple test app based on that information?

http://foltman.com/mdi/

Run it on Windows (I've tested in under XP), run it under original WINE, 
run it under WINE+my patch. Compare the Window menus with 0, 1 and 2 
child items.

It's supposed to have two dummy items (Dummy option 1 and Dummy option 
2), as well as normal child window list (with separator if any child 
exists, with no separator if there are no children).

Under original WINE (mdi.c from the latest CVS, the rest is one or two 
days old), the Dummy option 2 mysteriously disappears. Just try to 
create a child window and look at the Window menu.

And BTW, my app is silly and badly written. I've compiled it with mingw, 
as I don't have VC++ at home. I hope noone cares.

Krzysztof