Prevent lock/unlock sound during music playback

Lock/unlock sound mixes in with music and causes
lag and distortion.

Change-Id: I9d3582c6bf28aa62a5a6712bc9e89eb2f73e0288
(1/2) Volume Rocker:

* Volume rocker wake
* Volume rocker music control

Change-Id: I0b9b252153e1fe048f7048a9da2197797a577ff1
Signed-off-by: Andre Saddler <dresadd09691@gmail.com>

Conflicts:
	core/java/android/provider/Settings.java
	policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
Volume Rocker: Switch from Broadcast to Audioservice.

* Fix volume rocker music track seek.
* Minor fixes

Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>

Change-Id: If4afda046b9fbebda611615371a718122ffb57b6

Conflicts:
	policy/src/com/android/internal/policy/impl/PhoneWindowManager.java