stack blendlevel with opaque controls?

[Shao Sean]

> 4198 - Setting stack's windowShape resets stack's shadow Gonna need  
> this one fixed if we want to make resizable custom windows cross  
> platform.

If you use my external you will notice setting any property with Rev  
will remove the property set with my external due to the fact that Rev  
kills and re-creates the window instead of setting the property flag  
on the window (this might be due to historical reasons with X-Windows  
and the Unix background of MetaCard).. Basically all the window  
settings (on the Mac anyways) can be turned on and off without the  
window flickering (can the windowID before and after and you will see  
that it is a new window every time)..
-Sean