Halo: selectively add boost hints

boost only at the start of moving the halo for both reversed and regular
interactions.  Also boost for launching tasks.

-VanirAOSP

Change-Id: I910fa0b13205f80c84894f252ed3668f887d4fed

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/halo/Halo.java

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/halo/Halo.java
Notification Shade: add boost hints to onTouchEvent override

PS2: rebase/fix merge conflicts

-VanirAOSP

Change-Id: I5ab5d5a5cc351da5ea3e1dda0d1aba77913a6dd7

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java