Fix from Michael Stone for SF bug #660476 and #513033 (bogus thread
state swaps in readline).
diff --git a/Misc/NEWS b/Misc/NEWS
index e1456fe..5f3f847 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -21,6 +21,10 @@
Extension modules
-----------------
+- Fixed broken threadstate swap in readline that could cause fatal
+ errors when a readline hook was being invoked while a background
+ thread was active. (SF bugs #660476 and #513033.)
+
- fcntl now exposes the strops.h I_* constants.
- datetime changes: