a few more modules get __all__
diff --git a/Lib/imputil.py b/Lib/imputil.py
index ca359e95..3185d7d 100644
--- a/Lib/imputil.py
+++ b/Lib/imputil.py
@@ -14,6 +14,8 @@
 import struct
 import marshal
 
+__all__ = ["ImportManager","Importer","BuiltinImporter"]
+
 _StringType = type('')
 _ModuleType = type(sys)         ### doesn't work in JPython...