Issue #28227: Merge from 3.6

diff --cc Misc/NEWS
index 7d13a33a9ca1fd90b3fdeec32debea32336c83e7,abf9c93dfb5c6faec869a25054b4955635d8e79c..03036a8e28c89833418ed422752020a6573ba074
--- 1/Misc/NEWS
--- 2/Misc/NEWS
+++ b/Misc/NEWS
@@@ -54,9 -46,8 +54,11 @@@ Core and Builtin
  Library
  -------
  
+ - Issue #28227: gzip now supports pathlib.  Patch by Ethan Furman.
+ 
 +- Issue #28332: Deprecated silent truncations in socket.htons and socket.ntohs.
 +  Original patch by Oren Milman.
 +
  - Issue #27358: Optimized merging var-keyword arguments and improved error
    message when pass a non-mapping as a var-keyword argument.