Make the loader thread a Looper and move the package manager
updates into that thread as well.

This gets rid of the ANRs that happened because both threads were
holding mAllAppsListLock.  Now mAllAppsList should only be touched
from within the worker thread.

Change-Id: Ifc4ac27e0c0a927ac66c456d097fd3d4ef6c5e1e
2 files changed