Gesture Lockscreen [1/2]

Signed-off-by: MURA Stefano [STELIX PippoX3] <ssspinni@gmail.com>

Change-Id: I9820644d0a5752d62b8219e820e696c9157e949d

Conflicts:
	core/java/android/provider/Settings.java
	packages/Keyguard/src/com/android/keyguard/KeyguardHostView.java