move the check for a valid method to loader.php

git-svn-id: https://svn.muze.nl/svn/ariadne-php5/trunk@6467 7882d7ee-46e0-0310-a255-a28a61b628e4
use ENGINE instead of TYPE

git-svn-id: https://svn.muze.nl/svn/ariadne-php5/trunk@6468 7882d7ee-46e0-0310-a255-a28a61b628e4
also include mod_debug, because the loader is not including it anymore

git-svn-id: https://svn.muze.nl/svn/ariadne-php5/trunk@6469 7882d7ee-46e0-0310-a255-a28a61b628e4