Handle animations in Views' rectangle clipping methods.

getChildVisibleRect and getLocationInWindow do not take the new
mTransformationInfo View attribute.

As a result, these methods return invalid value during an animation
Bug 5638710

Changes in Patch Set 2:
- temporary allocations removed using static thread local variables (method
calls are NOT reentrant).

- scroll should be handled *before* applying the transformation matrix.
Fixed the call order in View#getLocationInWindow()

Patch set 4: fix from comments.
Patch set 5: <p>s

Change-Id: I15dc44c0659305d9029c59a47aba3a738bb35ae1