Now "en" lang has "en_utf8" as parent so we must allow

it to look for parent strings... Only "en_utf8" remains
as root language to save us from some checks (because
it cannot have parentlaguage defined).

lib/moodlelib.php

@@ -4728,8 +4728,9 @@ function get_string($identifier, $module='', $a=NULL) {
         }
     }
 
-/// If the preferred language was English we can abort now
-    if ($lang == $defaultlang) {
+/// If the preferred language was English (utf8) we can abort now
+/// saving some checks beacuse it's the only "root" lang
+    if ($lang == 'en_utf8') {
         return '[['. $identifier .']]';
     }