Enable touch splitting for all windows by default.

New default only applies to applications with targetSdkVersion >=
HONEYCOMB.  Old applications default to no touch splitting for
their windows.

In addition, enabled split touch for various system windows.

Bug: 3049580
Change-Id: Idc8da9baa2cd8e1e4e76af8967d7b6a5ccb94427
12 files changed