Lockscreen: enable longpress on expand challenge handle

If enabled it will be possible to longpress the little lock icon.

If it is an unsecure screen lock then the longpress will unlock the device.
If it is secure then the widget will fade into the background and you need
to enter the pattern, pin, password or whatever.

Change-Id: I901424c8c54d59298d6d77c10154f5410a636b01
Signed-off-by: Dirk Rettschlag <dirk.rettschlag@gmail.com>

Conflicts:
	core/java/android/provider/Settings.java
	policy/src/com/android/internal/policy/impl/keyguard/KeyguardHostView.java
PIE: better looking snappoints, reorientation bug

Change-Id: Ice134291d015fd17c434e5972177ca8068b13975
PIE: style

Change-Id: I64b645e3f85f99a939a4c5fb0fe499515d83d1d8
Merge branch 'jellybean' into 'jellybean-legacy'