am 21990922: Merge "Fix AbsListView scrolling behavior at edges." into froyo

Merge commit '219909224d9f5fdb4fe1c97fad048894c4619fe7' into froyo-plus-aosp

* commit '219909224d9f5fdb4fe1c97fad048894c4619fe7':
  Fix AbsListView scrolling behavior at edges.