Log the output from SQL print statements about log4jdbc-log4j2 HOT 4 OPEN

I had a go at implementing logging of SQL Messages and tested it in our 
Liquibase implementation with SLF4J and JDBC 4.1.  Print statements log 
successfully.

It is just a start on the full implementation. For example, I did not implement 
the Log4J 2 logging method (the method is empty) as I am not familiar with 
Log4J 2.

I also have not implemented logging of SQL Message the JDBC 3 and 4 modules.

Please see the attached Patch for Subversion.

Thanks for the proposed patch. Question: if you plan to use a specific logger 
for these messages, why defining the property DumpSqlMessage? This could be 
managed simply by setting the appropriate logger on/off, right?

Actually, I see that SQLWarnings should be logged by the 'resultSetLogger' when 
using SLF4J, and with the Marker 'LOG4JDBC_RESULTSET' when using Log4j2. Have 
you tried using these loggers/markers?