Backport fix for r54646-7: properly clear locale cache in time.strptime when
the locale changes between calls.
diff --git a/Misc/NEWS b/Misc/NEWS
index bb8385f..65e176e 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,6 +12,9 @@
 Library
 -------
 
+- Bug #1290505: Properly clear time.strptime's locale cache when the locale
+  changes between calls.  Backport of r54646 and r54647.
+
 - Bug #1706381: Specifying the SWIG option "-c++" in the setup.py file
   (as opposed to the command line) will now write file names ending in
   ".cpp" too.