no wheel event acceleration in Qt4.6.x

I believe this is a regression in the Qt4.6.x series, possibly due to the addition of gesture support. In Qt4.5.x on Mac we had wheel event acceleration. Example:

-launch Qt Creator
-open a large document (say 10,000 lines of code)
-using a Mac trackpad with two finger scrolling enabled, scroll down quickly.

In Qt4.5.x you could scroll to the end of the document in a single swipe. I believe this is because the rate of scrolling would accelerate. With Qt4.6.x on Mac this is no longer possible. I have yet to test this out on Windows to see if the issue is reproducible there but it may be as well.

For another example of the proper behavior, pull up XCode and you'll notice you can scroll down very quickly. This is a major drag for our users since our app shows very large documents can now have to be scrolled down using the scroll thumb or keyboard shortcuts since the mouse wheel/track pad is now only able to do fine scrolling.