some fixes.  model still does not go through.
another missing mut qual.
field "names" must be numbers in this model.
uncommented other code in attempt to see what happens.
fixes to get var-addr implemented.  Commented out some failing tests to get end-to-end run.
reintroduce test cases that actually work.
Merge pull request #1 from pnkfelix/master

get us closer to something plausible.