Add CPU boosting hooks

 * Send boost hint during scrolling
 * Still relevant on even high-end hardware

Change-Id: I72f2c2851b01fbceabddead03a4c3a7a0526ca61
settings: Enable the status bar double-tap to sleep gesture

Change-Id: Ibe4f1d0c864f261211d7ded418abfe45633e1392

Conflicts:
	packages/SettingsProvider/res/values/defaults.xml
[1/3]frameworks/base: add "Accept all files" option for incoming files via Bluetooth

This patch defines a key to store the option value in Settings Provider db

Change-Id: I993d7ec77b49f608a5a17e5a8516e52fc5d82946