framework: Add OnDoubleClickListener to View.

Simple Interface for allowing double click actions on
views. This piggybacks on the current performClick methods.
If a OnDoubleClickListener is set we will allow the double
click listener to handle the event. OnClickListeners will not
get callbacks.

Change-Id: I2244c3272029259e3904fe88011dfb8805dd674a
Allow ADB to be enabled by default via a config overlay on a per-device basis.
This is useful for developers that are testing and troubleshooting boot issues
and adb ends up being disabled by default once the system kicks in.  This should
only be used for testing and removed once a device is deemed stable and able to
boot.

Change-Id: Ib17d4e10ec68640ce55a91d5b1067d3d37eeec9d