Frameworks: Add support for variable size pattern lockscreen (Part 1/2)

Thanks CM

for the base.....ported to new keyguard, moved service and some
new API 19 stuff

Change-Id: Ia506308a111947d20058f86c4ad538bef463afaf

Conflicts:
	core/java/android/provider/Settings.java
	core/java/com/android/internal/widget/LockPatternUtils.java
	core/java/com/android/internal/widget/LockPatternView.java
	packages/Keyguard/src/com/android/keyguard/KeyguardPatternView.java
	services/java/com/android/server/LockSettingsService.java