Fix bug where we wouldn't release remote provider references.

The check for whether the release call is coming from another process was
very broken, and just happened to work by chance.  It also never worked for
apps that had code running in two different processes, with one process
using a provider in another of its processes.  Also a little cleanup and
debugging logs for provider management, and removal of that increasingly
annoying log about services being stopped.

Change-Id: Ibc298e674db7d35c4b6499fb32e30929a141b670