Mention that gethostbyaddr now also supports IDNA.

Lib/test/test_socket.py

@@ -642,6 +642,7 @@ class GeneralModuleTests(unittest.TestCase):
         socket.gethostbyname('испытание.python.org')
         socket.gethostbyname_ex('испытание.python.org')
         socket.getaddrinfo('испытание.python.org',0)
+        socket.gethostbyaddr('испытание.python.org')
 
 @unittest.skipUnless(thread, 'Threading required for this test.')
 class BasicTCPTest(SocketConnectedTest):

Misc/NEWS

@@ -66,7 +66,8 @@ Core and Builtins
 Extensions
 ----------
 
-- Issue #1027206: Support IDNA in gethostbyname, gethostbyname_ex and getaddrinfo.
+- Issue #1027206: Support IDNA in gethostbyname, gethostbyname_ex, 
+  getaddrinfo and gethostbyaddr.
 
 - Issue #9214: Set operations on a KeysView or ItemsView in collections
   now correctly return a set.  (Patch by Eli Bendersky.)