Fix pie controls being disabled by launcher gestures.

Some launchers have gestures for expanding/collapsing the status bar
from swipe gestures which call the respective StatusBarService methods
even if the status bar isn't visible due to expanded desktop. Because of
that, the status bar code internally thinks the expansion is carried out
(even if invisible), thus disabling the bottom pie controls in the
process.
Fix that by making PhoneStatusBar aware of it being hidden by expanded
desktop and ignoring the expand call in that case.

Change-Id: If386ca953517d9b5efcb6cb9054f5c5e6a9e0bc4
LockscreenTargets : Dismiss on target select

Only dismiss prior to activity launch for lockscreen shortcuts,
camera and appwidget picker remain untouched.

Change-Id: I2770c628ce0708570aa6ea0eac9e3cd1d82287fb
FlingTracker can divide by zero and hang StatusBar in an infinite loop

if 2 events have the same timestamp then FlingTracker in PanelView will divide
by zero causing NaNs. the bug is usually triggered by rapid StatusBar up/down
dragging activity and updateCarrierLabelVisibility can then loop indefinitely
looking at NaNs. the user visible symptom is that StatusBar refuses to pull
down and is burning cpu time.

Signed-off-by: Michael Bestas <mikeioannina@gmail.com>

Change-Id: I0791c6bea953bf03346185fc6aaf44aaea79aace
IME : Fix sym key regression

http://review.cyanogenmod.org/#/c/25787/2 caused the "dismiss" arrow
for ime's to execute back action as well. Reproducible via :

Open sms app->Open message thread->Tap message field->Tap downward arrow on navbar

Expected behaviour : Keyboard should be dismissed
Actual behaviour : Keyboard is dismissed and user is taken to previous screen.

Change-Id: I6ab65b00464fb6e00849d7fd6c8bd438b23ee76b
Option to show status bar in expanded desktop mode (2/2)

This commit allows the user to keep the status bar visible during expanded desktop mode.

Patch-set 1: clarify variable names.

Change-Id: Icb20971f8f86cb2ecf90f6226c1d5d18a60f5c84
Signed-off-by: Michael A. Alcorn <airalcorn2@gmail.com>

Conflicts:

	core/java/android/provider/Settings.java
	policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
 missing ;
pie color tweaked