See extended log...

- Created stub files for dehr/dehrd.py and dehr/dehr.py (global management daemon and command line accessor, respectively)
- Moved dehr/dehr/ to dehr/dehrlib/ to prevent confusion with dehr.py; references have been updated
- Pypy embedded version seems to be having isssue, so started adding support for use of regular Python
- Installer now has limited ability to automatically manage task dependency without the user's help
- Further progress is halted until I can figure out how to deal with weird task precedence issues