Logging.
Moved several files into a new utility module.
All: Updated paths to names that are now located within the utility module.
Moved all files out of lazyflow/operators/obsolete into lazyflow/operators.
Cleanup: Moved old example code into the obsolete directory.
Moved h5dumprestore and tutorial to the obsolete directory.
Removed config module.  Please builtin python logging and/or warnings module for console output.