Lockscreen: Add clock alignment (1/2)

Screenshots:
- Left: https://dl.dropbox.com/u/4806199/Screenshot_2012-09-08-20-24-30.png
- Center: https://dl.dropbox.com/u/4806199/Screenshot_2012-09-08-20-24-15.png
- Right: https://dl.dropbox.com/u/4806199/Screenshot_2012-09-08-20-24-23.png

* Portrait only!

Patch-set 2:
    * Fixed boot loop when using security settings
    * Support for sw600dp

Patch-set 3:
    * Update sw600dp

Change-Id: I41aeea50e95b0655c2bc90b56ee506e7baa470e2

Conflicts:
	core/java/android/provider/Settings.java
	core/res/res/layout-sw600dp/keyguard_screen_tab_unlock.xml
	core/res/res/layout/keyguard_screen_password_portrait.xml
	core/res/res/layout/keyguard_screen_tab_unlock.xml
	core/res/res/layout/keyguard_screen_unlock_portrait.xml
	core/res/res/values/public.xml
	policy/src/com/android/internal/policy/impl/KeyguardStatusViewManager.java