- log4j.jar is the log4j product
- ow_util_log_api.jar is the monolog api (with configuration aspect)
- ow_util_log_file.jar contains tools to load a monolog configuration
  from a file.
- ow_util_log_wrp_log4j.jar is the log4j/monolog wrapper (with common class)
- ow_util_log_wrp_pw_only.jar is the PrintWriter/monolog wrapper
  (without the common class)
