- Add cos field to database, tests for this, tests for 'ls -P'
- Make expected/actual values easier to compare in testhelp.py
- Improve fdparse() efficiency by caching compiled regexps
- Ensured all Checkable methods have tests
- Tests for adding cos field to database are passing
- Capture cos data for files from hsi (directories do not have
  associated cos data)
- Report total tests, errors, and failures in all_tests