FLAG_ACTIVITY_NEW_TASK re-added to floating windows

ActivityStack modified to not cancel results if window is floating and "new".

Change-Id: I45f3dcc816092daa4192be91828592a0b2b2ac59
PA PIE : Support SPN or Custom Carrier Label
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
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
Revert "[WIP] Multi-window"

This reverts commit 7cbfe1ec8d2f4ba923ae29638ca05d6e479ce17e.