Mac Evaluation installer: Log file in CONFLUENCE_HOME isn't created properly.

The Mac Evaluation installer creates a directory called output.log in the CONFLUENCE_HOME/logs directory but it does not create proper log files.

E.g. for 3.4.8 CONFLUENCE_HOME can be found here:

/Users/$USER/Library/Application\ Support/Atlassian\ Evaluation/work/confluence/3.4.8/confluence-home