x11drv: ShowWindow(SW_MAXIMIZE) should ignore WS_MAXIMIZE [bug1735]
With some tests to show the correct behavior. This causing problems when window
is created with WS_MAXIMIZED state set, but had it's size changed before call
ShowWindow. This affects Delphi programs that read their design time state from
the resources. Which most of the time doesn't have correct maximized size.
- ShowWindow(SW_MAXIMIZE) should ignore window's maximized state.