convert all the _well_known service controllers which are a bit touchy when it comes to the router

Zotlabs/Module/Hostxrd.php

@@ -0,0 +1,24 @@
+<?php
+namespace Zotlabs\Module;
+
+
+class Hostxrd extends \Zotlabs\Web\Controller {
+
+	function init() {
+		header('Access-Control-Allow-Origin: *');
+		header("Content-type: application/xrd+xml");
+		logger('hostxrd',LOGGER_DEBUG);
+	
+		$tpl = get_markup_template('xrd_host.tpl');
+		$x = replace_macros(get_markup_template('xrd_host.tpl'), array(
+			'$zhost' => \App::get_hostname(),
+			'$zroot' => z_root()
+		));
+		$arr = array('xrd' => $x);
+		call_hooks('hostxrd',$arr);
+	
+		echo $arr['xrd'];
+		killme();
+	}
+	
+}