Setup basic logging for reclass

* Create a new module, reclass.logs with a basic configuration
  provided to logging.config.dictConfig()
* Log messages to stderr by default
* Set default log (verbosity) level to ERROR
* Provide a new flag, --debug, to enable debug messaging (set log
  level to DEBUG)

This does not make use of the logging as much as provide the basic
structures to use.
replace null vvv() prints with logger.debug()

use RECLASS_NAME from reclass.defaults to specify the logger