[FIX] Fix for transparent thumbnails in 32-bit depth ( [sm][et][er] [approved] )

[marcus at ira.uka.de]

[approved]

> Note that this will have to be changed when we get rid of the hardcoded
> eToys fonts.
Yes, and vice versa... that's life. And that's why fixes need to be
harvested
*faster*. the hardecoded-etoys changeset should have been added months
ago!
(but nobody cares).

   Marcus













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