revert 7033563ded6ec43dbd7290c54f52e4a3de4658c9 and d3f774bb6f07f69a6d298e1d25fb72b7c9b9dc8b and remove exception linking from AgaviXsltRenderer and AgaviScribeLoggerAppender. Thank you, PHP 5.2, for having retarded ctor arginfos. Closes #1214 for good.