task/ta-log-01 -- log.py can rollover logs

Makefile
* do not need to specify a LOG_CONF during make.  If a test is run, it
  will automatically dump to console without configuration file support

nparcel/bin/npexporterd
nparcel/bin/npftp
nparcel/bin/nploaderd
* start action will force a roller if required

nparcel/utils/log.py
* default configuration of the root logger if a configuration file is
  not found
* new function rollover() which is specific to a
  TimedRotatingFileHandler handler.  It will force a rollover
  of the logs as per the requirements outlined in the logging
  configuration