Merge 3.6

diff --cc Misc/NEWS
index af42d901342bc6d0b02aee506669c107ee7611b9,929ce5322b26195ec80d72c2547415a88cd89e5c..d465cdcae1299e09aa70d44385bdd33b4ac991e9
--- 1/Misc/NEWS
--- 2/Misc/NEWS
+++ b/Misc/NEWS
@@@ -10,13 -10,26 +10,17 @@@ What's New in Python 3.7.0 alpha 
  Core and Builtins
  -----------------
  
 -Library
 --------
 -
 -Tools/Demos
 ------------
 -
 -- Issue #28023: Fix python-gdb.py didn't support new dict implementation.
 -
 -
 -What's New in Python 3.6.0 beta 4
 -=================================
 -
 -*Release date: 2016-11-21*
+ - Issue #28782: Fix a bug in the implementation ``yield from`` when checking
+   if the next instruction is YIELD_FROM. Regression introduced by WORDCODE
+   (issue #26647).
+ 
 +- Issue #28774: Fix error position of the unicode error in ASCII and Latin1
 +  encoders when a string returned by the error handler contains multiple
 +  non-encodable characters (non-ASCII for the ASCII codec, characters out
 +  of the U+0000-U+00FF range for Latin1).
  
 -Core and Builtins
 ------------------
 +- Issue #28731: Optimize _PyDict_NewPresized() to create correct size dict.
 +  Improve speed of dict literal with constant keys up to 30%.
  
  - Issue #28532: Show sys.version when -V option is supplied twice.
  

diff --cc Python/ceval.c
Simple merge