* Added a 'LOGS.LOCK_USER_NAME' field to the database.
* Added a 'LOGS.LOCK_STATION_NAME' field to the database.
* Added a 'LOGS.LOCK_IPV4_ADDRESS' field to the database.
* Added a 'LOGS.LOCK_DATETIME' field to the database.
* Incremented the database version to 273.
* Added log locking logic to rdlogedit(1).