Gesture Lockscreen [1/2]

Change-Id: I370d40d47459d64adf709d4caee1c27c75922cfd

Conflicts:
	core/java/android/gesture/GestureOverlayView.java
	core/java/android/provider/Settings.java
	core/java/com/android/internal/widget/LockPatternUtils.java
	services/java/com/android/server/LockSettingsService.java
fix

Change-Id: If5a59c53ad0ec1d65aa9f9684c3574321e467afa