Add support for sending raw commands

 * Certain camera drivers need magic commands to select special modes
   such as ZSL or HDR. Add support for sending raw commands from
   applications.

Change-Id: I512a765c7a67ffd2877e465cf6493ffc2b3b54ac
hwui: Don't discard framebuffer on exynos4

The layers gets empty/not cleaned and redrawn on top of the preview,
causing beautiful glitch on homescreen, and drawing black instead
of transparency.

Change-Id: I633b104224c73c625f1193ee3dde41823cddc5bf

Conflicts:
	libs/hwui/LayerRenderer.cpp
[1/2] base: allow disabling volume adjust sound

Change-Id: I95893180865209d2aeaf4b3fa129a74df7523bbe
Enable Quick Unlock (2/2)

old way does not work anymore exactly like before. So adapt the idea to new LP code

Thankd DVTonder for the basic idea prior LP

PS:
- do PIN view correctly

Change-Id: I86660afafb8648d36d6c135343c88afcfc5173fc