Merge Py Idle changes:
Missed adding "import types" while merging PyShell by hand....
diff --git a/Lib/idlelib/PyShell.py b/Lib/idlelib/PyShell.py
index 7ce5244..29ebd92 100644
--- a/Lib/idlelib/PyShell.py
+++ b/Lib/idlelib/PyShell.py
@@ -7,8 +7,9 @@
 import re
 import socket
 import time
-import warnings
 import traceback
+import types
+import warnings
 
 import linecache
 from code import InteractiveInterpreter