Rework Pie Logic

Change-Id: Idf5b3052354ad6eaf351d097ea10c30efd56a0e1
PIE: new, awesome repositioning system, better animations, better
looking snappoints, pie can be centered or appear where the swipe-up
happens, onconfigchanged bugfixes, panelswipe will not accidentally
trigger pie reposition

Change-Id: Ia1c3f4caee5432a6ab5d85e2e9e5b638471dc032

Conflicts:
	core/java/android/provider/Settings.java
	packages/SystemUI/src/com/android/systemui/statusbar/view/PieMenu.java