PIE: Unlock screen on triggering recents

* Bring up unlock panel. Clear all is still hidden when lockscreen is showing.
  Thanks to community for pointing this out.

Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>
Frameworks: Translation Import Catalan

Change-Id: I1a498ff10abe56618616c272b20371a089679f2c

Conflicts:
	packages/SystemUI/res/values-ca/pa_strings.xml
Frameworks: Translation Import Spanish

Change-Id: I8e80e68194c893d2c45ced00946e37b676d67982
Frameworks: Translation Import German

Change-Id: Iaef7676b5a07ac7459dec33b5a0e4ffc3f543ed5
Frameworks: Translation Import Polish

Change-Id: Ie421c77eb49d35de8003606184051e1d2da1d0bc
Frameworks: Translation Import Indonesian

Change-Id: If0c177a615e9bdd438febe27a3ce01a08d0d8eea
Frameworks: Translation Import Portuguese, Brazilian

Change-Id: I6737dacc8b8d062d8e97ca72d16ccc43617b92ee
Frameworks: Translation Import Italian

Change-Id: I1435c937fd865379a6f7662616af8bce8f68cd50
Frameworks: Translation Import Dutch

Change-Id: Id5c803af8d602465d68ce196f56703029819ac73
Frameworks: Translation Import Chinese (Simplified)

Change-Id: If8ad0637f6f11b996294f8e2db3d3853c7b35163

Conflicts:
	packages/SystemUI/res/values-zh-rCN/pa_strings.xml
Null pointer exception in FileRotator.java

Sometimes a null pointer exception is thrown when examining files
managed by the file rotator.

The logs from the test show that the Wifi state is changed a large
number of times. On every state change, a write operation is
initiated on the file system. This will eventually result in out
of memory and the call to mBasePath.list() in the maybeRotate(...)
method in FileRotator.java will return null so the iteration will
throw a NullPointerException.

Change-Id: I5d5980d9593bc9ec75281169ca27ee591809903f

Conflicts:
	core/tests/coretests/src/com/android/internal/util/FileRotatorTest.java