Frameworks: SlimPie only preload recent on button press down

and not like it was before on showing up pie for better peformance

Change-Id: I87ec56649a5bc8979225036b9eb8e823de587185
SlimPie: turn on HA on highEndGfx devices

for smoother experience

Change-Id: Ie2a052e1071a8ab7ea303b6a8d21e245658bec2b
Frameworks: SlimPie give user ability to reduce trigger heights if IME keyboard shows (1/2)

Add a user option to reduce left and right trigger of SlimPie if keyboard shows up
(especially usefull for swipe keyboard which most keyboards are nowadays). Enabled
by default user can disable it in settings.

Change-Id: I5dce4f36f5b14320f806ac60ad75931fa7f2873b

Conflicts:
	core/java/android/provider/Settings.java