added experimental support for Web Services, right now one concrete implementation for the XMLRPC-EPI PHP extension is bundled (no support for response options and input/output character encoding detection yet). sample app contains a small test case for that - use xmlrpc.php and call method 'getItemPrice', argument 'name' may be any of what can be viewed in 'Search Engine Spam' in the web interface. refs #226, #227 and #257