Don't try to set service.bootanim.exit

init has never allowed the bootanimation code to
set service.bootanim.exit, and has always generated the
dmesg error message

  <3>[   17.644615] init: sys_prop: permission denied uid:1003  name:service.bootanim.exit

Since setting this property has no effect and never worked, delete
the code which tries to do it.

Change-Id: Idacc5467d85479a8cf974702af8895011be585ea
Fix visibility of multiple non-fullscreen activities.

Issue detail:
Assume X, Y are non-fullscreen activities.
 a.Home starts an activity X in task A in application stack.
 b.X starts an activity Y in <task A> or <new task B>
 c.Activity X will be invisible.

How to fix:
Because the function "isActivityOverHome" means an activity is able to see home.
But there may have many non-fullscreen activities between the top non-fullscreen activity and home.
If flag "behindFullscreen" is set, those middle activities will be invisible.
So it should only take care from who is adjacent to home.
Then check two flags frontOfTask(task root) and mOnTopOfHome for constraining the condition.

Change-Id: I60bcea304976414e44835a0a38675aae365e9e19
QuickSettings : Quick Collapse [1/2]

Credits: Danesh M

Change-Id: I0257c7819cc1ccb5d0a092dc23fb9fa4ccec5c3b

Conflicts:
	core/java/android/provider/Settings.java
Return: Always show battery on Keyguard [1/2]

Based on the feature by burnsra in CM7

Authored by Blunden
Tweaked by DvTonder
Tweaked by kufikugel

Change-Id: I02cc3a0d996ca1fb3c96c6847865655be5518434

Conflicts:
	core/java/android/provider/Settings.java
Fix merge
start/stop observing for brightness slider in window attachement overrides

Change-Id: Ief173b58c5c4c8918856342361b4944771e3567f