FW: Lockscreen rework WIP

The frameworks side of trhese rework is basiclly adding
Lockscreen targets and removing unneeded and used variable left
in by google.

Patchset 2: fixed landscape issues with phones

Patchset 3: Added null check for uninstalled apps.
            Add some logic for padding if the 6-8 targets are used.

Patchset 4: Removed option for long press challange unlock, I dont think
            this need to be an option it should just be default.

Patchset 5: Fix rings around targets.

Patchset 6/7: Fix big empty icons in the rc ui.
            Fix layout for 6-8 targets again...

Change-Id: Ic9a4b4f85c674dc9d4097541d447723e2dd47956

Conflicts:
	core/java/android/provider/Settings.java
	policy/src/com/android/internal/policy/impl/keyguard/KeyguardSelectorView.java