An MDI regression

[Duane Clark]

A minor regression in the MDI code. I am not sure which patch it was, 
but it is something in the last couple of weeks. Open most any MDI 
application (I've tried 3) including Pegasus mail. Maximize one of the 
windows, and take a look at the menus. Even better, after doing that, 
drag the entire application to a different size. The effect is rather 
impressive.