* removed the CONF_DRY_RUN switch, as we don't need it here
* inverted the CONF_DRY_RUN switch. It is now called CONF_DO_IT and
  by default the script does not do anything, it just reports what
  would have been done. Updated the configuration file, too.
* Switched to mv(1) instead of rsync(1) for the actual work. No need
  to bring out the big guns.