Disable WebGL

Adreno200 is too slow to be usable for this, and quick tests show that
WebGL applications can lead to hard crashes easily. Ouch.

Change-Id: Ie50567e8f7d8afa11f80379bb892763e238d037b
Backport patch: Allow purging of asset bitmaps

Change-Id: I9fe7dc59ebb1db54c84aba23c434aef7bd0700a4
Add patch: Reduce aggressiveness of KSM scanning

Change-Id: Ie9cb1ced2105a67cd32571f5d4a83a06c10f32f7
Add WiFi tethering support

Change-Id: I66447ac705e65577910c36a518773ff04c8b6775