Backport of r66703:
Issue #3863: Disabled a unit test of fork being called from a thread
when running on platforms known to exhibit OS bugs when attempting that.
diff --git a/Misc/NEWS b/Misc/NEWS
index a98ae2c..435961c 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -250,6 +250,9 @@
Tests
-----
+- Issue #3863: Disabled a unit test of fork being called from a thread
+ when running on platforms known to exhibit OS bugs when attempting that.
+
- Issue #3261: test_cookielib had an improper file encoding specified.
- Patch #2232: os.tmpfile might fail on Windows if the user has no