Protect the thread api calls in the _ctypes extension module within
#ifdef WITH_THREADS/#endif blocks.  Found by Sam Rushing.
diff --git a/Misc/NEWS b/Misc/NEWS
index 8e83867..2b3a8df 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -19,6 +19,9 @@
 Library
 -------
 
+- The '_ctypes' extension module now works when Python is configured
+  with the --without-threads option.
+
 - Bug #1504333: Make sgmllib support angle brackets in quoted
   attribute values.