Subject fixed bug in logging
Author rrokytskyy

I have fixed a bug in org.firebirdsql.logging.LoggerFactory.
Implementation tried to look for org.apache.log4j.Logger class that is
not available in log4j version shipped with driver. Also our
org.firebirdsql.logging.Log4jLogger uses org.apache.log4j.Category,
and not org.apache.log4j.Logger.

Now you can specify -DFBLog4j=true and get extensive logging in
log/test.log file.

Best regards,
Roman Rokytskyy