Apply Amaury's patch to multiprocessing for issue 3125, removes the copy_reg and replaces it with ForkingPickler.register(), which should resolve the conflict with the global registry/ctypes
diff --git a/Misc/NEWS b/Misc/NEWS
index 4d98270..90e42c7 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -63,6 +63,11 @@
Library
-------
+- Issue #3125: Remove copy_reg in multiprocessing and replace it with
+ ForkingPickler.register() to resolve conflict with ctypes.
+
+- Issue #3090: Fixed ARCHFLAGS parsing on OS/X
+
- Issue #3313: Fixed a crash when a failed dlopen() call does not set
a valid dlerror() message.