tweak work_dir check in default autoloader 3, a=chris

diff --git a/src/configs/Config.php b/src/configs/Config.php
index bd1e2a29c..b6188df5b 100755
--- a/src/configs/Config.php
+++ b/src/configs/Config.php
@@ -62,7 +62,7 @@ if (file_exists(__DIR__."/../../vendor/autoload.php")) {
         $unixify_class_name = "/".str_replace('\\', '/', $relative_class) .
             '.php';
         foreach($check_dirs as $dir) {
-            $file = __DIR__ . "/../../$dir" . $unixify_class_name;
+            $file = $dir . $unixify_class_name;
             if (file_exists($file)) {
                 require $file;
                 break;