pie 2.0

Change-Id: I2bf0093751197953f1a0b39c76c4bad3846062be

Conflicts:
	packages/SystemUI/res/values/dimens.xml
	packages/SystemUI/src/com/android/systemui/statusbar/PieControl.java
	packages/SystemUI/src/com/android/systemui/statusbar/view/PieItem.java
	packages/SystemUI/src/com/android/systemui/statusbar/view/PieMenu.java