* xrange doesn't exist in python3 - converted it to range.
* Removed deprecated unicode() command.
* Updated error handling in check_db.
* Added requirements section to README.
* Copying test_list to create delroot unit tests.
* Added --dry-run to delroot options. Not implemented yet!
* Missed some has_key() entries in brd_unit_base.py
* Started adding a function to build a tree data structure from database contents to brd_unit_base.py
* Started adding a function to diff two tree data structures to brd_unit_base.py.
* Finished first pass of test_dir_target() in test_delroot.py. Need to test!
* Commented out most functions in test_delroot.py.