Fixed a small bug in strings_only handling for force_unicode().

git-svn-id: http://code.djangoproject.com/svn/django/trunk@6267 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/utils/encoding.py

@@ -30,7 +30,7 @@ def force_unicode(s, encoding='utf-8', strings_only=False, errors='strict'):
 
     If strings_only is True, don't convert (some) non-string-like objects.
     """
-    if strings_only and isinstance(s, (types.NoneType, int)):
+    if strings_only and isinstance(s, (types.NoneType, int, long)):
         return s
     if not isinstance(s, basestring,):
         if hasattr(s, '__unicode__'):