Fix PhoneWindowManager animationFinished callback.

Change-Id: I86863a44e3e710aa5ea6ad433a42a3fad3bccac1
PackageManager: Limit the platform-key protection to test-keys builds

This block (change I7390b3bdf5289411f7a335c69635bed9f74bbfb3) is intended
to protect the system from abuse of well-known keys. That's not the case
if the system is signed with dev or release keys.

Change-Id: Ifb66f775dd28c577447634ae177442732a18b592
Merge remote-tracking branch 'upstream/cm-10.2' into cm-10.2