Remove the navigation camera icon in keyguard if disabled by DPM

The logic here is incorrect: the camera shortcut is/should be accessible
even with a secure lock screen. As a result, a device with the lock
screen camera disabled by DPM and an insecure lock screen would still
display the unfunctional shortcut.

Change-Id: If1d172932c6c2af596c38e623521c992fdf95402
SystemUI: Add double tap to sleep gesture

Change-Id: I4c54718e8ec8774677d13917b3a7ffa3b4b18cb5
Option to use volume keys to control media volume anytime (1/2)
DO NOT MERGE - Fix improper declaration/use of pointer.

https://code.google.com/p/android/issues/detail?id=61547

This variable is shadowing the outer "ptr" declaration, resulting in a
potential NULL pointer being passed to the message API.

Change-Id: If96bfae8d5e874e12597182678a180ba137b78da
Hardcode double tap to sleep gesture.

I love it. :P
Make the lock screen camera widget configurable (1/2)

Change-Id: Ia349c39937a56ee53c2c8ec2441d71ad081572e3