Fix some random bugs.

2185256: After open &close of device keyboard shortcut does not added to Home desktop.

ActivityThread was losing the last saved state when restarting or launching into
a paused state.

2366174: defaults not cleared when they should be

PackageManagerService now removes any preferred activity records for a package
when it is uninstalled.

2154556: Battery stats can have an unbounded number of wake locks

We now start combining wake locks into one shared record when we hit a
maximum limit (currently 20).

2442519: Foreground services can have no notification by providing a bogus one.

If the notification manager rejects our notification, the service is forced to
no longer be in the foreground.

2442383: Finalization issues in com.android.server.am.PendingIntentRecord.java

Cleaned up finalization to call super class and avoid the big activity manager
lock (we still need to use the locks inside of the message system, but these
are much less likely to be a problem).

2284190: Cannot call a phone number using adb

We weren't getting the calling uid/pid in startActivity() if the caller did not
supply an application record.