Some suggested fixes for build.xml

Here are a few suggestions for fixing some issues in build.xml. 

The new regex replacement patterns for updating wp-config.php fixes an issue with replacement strings that begins with a number. A database password like "1secretpass" would for example result in a replacement string like "\11secretpass\2".

Then we discovered that the adhoc-task that runs wp_install and calls boot.php had a problem with the include_path if phing is not running from the same directory where wordpress is installed. This update resolves the problem to the point where php no longer displays fatal errors and Wordpress is installed, even though the phing build does not seem to complete.