Closing in on saved context.  Everything works now, but native handlers still get compiled and cached.  Need to avoid that.
Updated the core load / save, and added context load / save.  Removed `_crashRoot`.
Initial attempt to save / restore the included file list from the cache.
The compilable context now contains pre-compiled versions of the handlers provided at runtime.
Corrected issue of not finding the correct pre-cached native handler (so all native handlers go re-compiled).
Merge pull request #165 from sprowell/loc

Saving and loading of contexts and compilable contexts implemented.