add a replacement API for PyCObject, PyCapsule #5630

All stdlib modules with C-APIs now use this.

Patch by Larry Hastings
diff --git a/Misc/NEWS b/Misc/NEWS
index c0940f4..13360f8 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -226,6 +226,11 @@
   support.EnvironmentVarGuard objects restored the environment variables
   incorrectly on __exit__.
 
+C-API
+-----
+
+- Issue #5630: A replacement PyCObject API, PyCapsule, has been added.
+
 
 What's New in Python 3.1 alpha 2?
 =================================