Android security 10.0.0 release 74
Merge cherrypicks of [8828839, 8824129, 8828883, 8828885, 8828888, 8828891, 8829076, 8828998, 8828999, 8828607, 8828957] into qt-release

Change-Id: I922797b0f8caea74cf6d74ececd4f102d755ae1d
tree: 0d99bbb056d1468a96ba110b1692e0c6ab0f86ba
  1. prebuilt/
  2. Android.mk
  3. CleanSpec.mk
  4. README