Issue #23421: Fixed compression in tarfile CLI. Patch by wdv4758h.

diff --cc Lib/tarfile.py
Simple merge

diff --cc Lib/test/test_tarfile.py
Simple merge

diff --cc Misc/NEWS
index 12a376268de06d6930af916b929626aa02586f9c,b411abf2828c27dbff4019e58689322ace55c837..d704e6498073cd05d8c7adb29330c30dc48a166c
--- 1/Misc/NEWS
--- 2/Misc/NEWS
+++ b/Misc/NEWS
@@@ -13,14 -13,13 +13,17 @@@ Core and Builtin
  Library
  -------
  
+ - Issue #23421: Fixed compression in tarfile CLI.  Patch by wdv4758h.
+ 
  - Issue #23361: Fix possible overflow in Windows subprocess creation code.
  
 -What's New in Python 3.4.3rc1?
 -==============================
 +- logging.handlers.QueueListener now takes a respect_handler_level keyword
 +  argument which, if set to True, will pass messages to handlers taking handler
 +  levels into account.
 +
+ 
 +What's New in Python 3.5 alpha 1?
 +=================================
  
  Release date: 2015-02-08