Logger.php: replace relative path with absolute. More general solution.

extension/Source/core/helper/Logger.php

@@ -78,14 +78,7 @@ class Logger {
      * @return string
      */
     private static function relativeToT3Dir($filename) {
-
-        if (isset($filename[0]) && $filename[0] != '/') {
-            if (strpos(getcwd(), 'qfq/' . API_DIR_EXT) !== false) {
-                return ('../../../../../' . $filename);
-            }
-        }
-
-        return $filename;
+        return substr(getcwd(), 0, strpos(getcwd(), '/qfq')) . '/qfq/' . $filename;
     }
 
     /**