Yet another bug. This time filters vs selections

[Boudewijn Rempt]

On Mon, 14 Sep 2009, Dmitry Kazakov wrote:

> Here is a benchmark that i used for testing. It is done as a separate
> unittest.

I think it's okay to commit that. As soon as we move to Qt 4.6, we can
use the performance testing featuresof QTestLib to make this more formal.

> 
> Really interesting numbers for you are "bitBlt with sel:" and "Selections
> inside filter:".
> 
> -- 
> Dmitry Kazakov
>