6794764: Translucent windows are completely repainted on every paint event, on Windows
6719382: Printing of AWT components on windows is not working
6726866: Repainting artifacts when resizing or dragging JInternalFrames in non-opaque toplevel
6683775: Painting artifacts is seen when panel is made setOpaque(false) for a translucent window
Reviewed-by: anthony, tdv, alexp
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<applet code="bug6726866.class" width=400 height=100></applet>
Drag the internal frame inside the green undecorated window,
if you can drag it the test passes, otherwise fails.
</body>
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