FlingTracker can divide by zero and hang StatusBar in an infinite loop

if 2 events have the same timestamp then FlingTracker in PanelView will divide
by zero causing NaNs. the bug is usually triggered by rapid StatusBar up/down
dragging activity and updateCarrierLabelVisibility can then loop indefinitely
looking at NaNs. the user visible symptom is that StatusBar refuses to pull
down and is burning cpu time.

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PanelView.java
Update list of all audio files.

This adds a script that can generate the list from the other
makefiles.

This also regenerates the list.

Bug: 6336895
Change-Id: If1546c4a3f5b1f0d7c3ca79d29383e9843b2a89d

Conflicts:
	data/sounds/AllAudio.mk
Don't include flags in configuration change if their value hasn't changed.

This makes the check in updateFrom() match the logic in diff().

Change-Id: I3ab4e8460f7fbf985ef55b9514a8aa90d401d486