Moved tracking the current PID to the modules

The privatized object count was previously tracked via in the runtime.
Now, it is an atomic integer in the modules that is passed into the
runtime when creating new privatized classes.
Updated some .goods that changed after moving the pid into the modules
Convert PIDs to be int(64) and count with a processor atomic
Merge pull request #42 from Kyle-B/move-pid-tracking-to-modules

Move pid tracking to modules