Modified EventLog to eliminate the separate revision column and instead foldthat into the docid string. Log now includes read events, but need to updatethe data sent there.
Added javadoc that was missing for the EventLogData class.
Added classes for basic event logging support. These classes write log entries to the database connection. Still to do: query the event log, write oracle sql code (postgres is done), possibly allow the log to be archived to a text file, and possibly do the dtabase writes asynchronously via a caching mechanism.