Support using an installer script to drive izpack installer.
http://izpack.org/documentation/advanced-features.html#automated-installers
http://izpack.org/documentation/advanced-features.html#logging-the-installation
Currently, we use a SimpleFinishPanel, but will need to switch to something less simple to be able to capture install details into an xml script.
http://izpack.org/documentation/panels.html#simplefinishpanel