Merge 3.6.0a2 releasing branch into default

diff --cc Misc/NEWS
index df29fb26ce8b5e25b8b23a5769e70960a2b7076f,5a9d42ca36b00015015cb52295695e91971a5cf7..246896fa909e4e113d3b1ac81bf57695c974da94
--- 1/Misc/NEWS
--- 2/Misc/NEWS
+++ b/Misc/NEWS
@@@ -7,21 -7,12 +7,21 @@@ What's New in Python 3.6.0 alpha 
  
  *Release date: XXXX-XX-XX*
  
 -Core and Builtins
 ------------------
 -
  Library
- +++++++
+ -------
  
- ++++
 +- Issue #22636: Avoid shell injection problems with
 +  ctypes.util.find_library().
 +
 +- Issue #16182: Fix various functions in the "readline" module to use the
 +  locale encoding, and fix get_begidx() and get_endidx() to return code point
 +  indexes.
 +
 +IDLE
++----
 +
 +- Issue #27310: Fix IDLE.app failure to launch on OS X due to vestigial import.
 +
  
  What's New in Python 3.6.0 alpha 2
  ==================================