I have created a builder plugin for Phing (which I'll be attaching, permissions allowing). Phing (http://phing.info) is a build tool for PHP based on Apache Ant and used by a number of projects & frameworks in the PHP world. As Phing is based closely on Ant, the PhingBuilder is pretty much a simplified version of the AntBuilder.

This patch also includes documentation. I assumed that the appropriate place to provide documentation was in the configxml.html page itself. Please let me know if this is not the case & I can put that in the appropriate place.