title: log4j: Log output of a specific class to a specific appender
body: <p>I use log4j and would like to route the output of certain Loggers to specific files. </p>
  
  <p>I already have multiple appenders in place. Now, to make debugging easier, I want to tell log4j that the output generated by a specific class (e.g. foo.bar.Baz) should be written to a specific log file.</p>
  
  <p>Can this be done?</p>