PackageManagerService: fix StrictMode violation in getFileCrC

E/StrictMode(  915): A resource was acquired at attached stack trace but never released. See java.io.Closeable for information on avoiding resource leaks.
E/StrictMode(  915): java.lang.Throwable: Explicit termination method 'close' not called

Change-Id: I8d68c05f32c0c299e9102ffccfcb4776e21a5b4b
ActivityManager: reduce reuse recycle

These inner classes are registered as services for each system process to dump information
during certain events like ANRs.  We can combine to reduce memory footprint by eliminating
the redundant inner classes and registered services.

Change-Id: I7c85323fb42ea67503841cc0717ef915ae9c851f