Improve a test_ddfs setup.
Fix arg type compatibility issue with Erlang 15B02 (issue #330).
Log node locations on ddfs put/get failures and on gc deletes.
Batch expired tag removal from +deleted.
Add another location to error log.
Make deb maker script executable.
Make http header handling case-resilient.
Minor cleanup in comm.py:upload().
Python3: fix exception syntax.
Python3: fix print syntax (print is now a function), and some string formats.
Python3: use recommended format syntax.
Python3: iteritems() -> items().
Python3: xrange() -> range().
Python3: explicitly unpack tuple arguments.
Python3: execfile -> exec.
Python3: expand range/filter/map objects into lists.
Python3: explicit import of time module.
Python3: add __pycache__ to exclude path.
Python3: add a compatibility library for renamed/changed modules and types.
Python3: rewrite import scanner to handle newer api for function objects and bytes/string differences.