Use apaches mod_env to set the database credentials in the virtualhost file,...

Use apaches mod_env to set the database credentials in the virtualhost file, so that they are only accessible inside a specific process. the $_SERVER values are now bootstrapped in the verify site process and the config file rewritten, so that you can now safely verify a site. the $_SERVER values are stored inside the site drushrc.php so that normal drush commands will continue to operate as they would. The open_basedir directive is commented out until we can resolve issues with it.