Issue #16447: Merge fix from 3.3.

diff --cc Misc/NEWS
index eeeb9ccfd5eff90e18a58f927d6b0608005031bc,94a3ed32e9af4f05f3a3884c3bd76e774dd85bc2..4f42ff50b67574234facec0af4600aee50fefc4c
--- 1/Misc/NEWS
--- 2/Misc/NEWS
+++ b/Misc/NEWS
@@@ -10,26 -12,16 +10,29 @@@ What's New in Python 3.4.0 Alpha 1
  Core and Builtins
  -----------------
  
+ - Issue #16447: Fixed potential segmentation fault when setting __name__ on a
+   class.
+ 
  - Issue #17669: Fix crash involving finalization of generators using yield from.
  
 +- Issue #14439: Python now prints the traceback on runpy failure at startup.
 +
 +- Issue #17469: Fix _Py_GetAllocatedBlocks() and sys.getallocatedblocks()
 +  when running on valgrind.
 +
  - Issue #17619: Make input() check for Ctrl-C correctly on Windows.
  
 +- Issue #17357: Add missing verbosity messages for -v/-vv that were lost during
 +  the importlib transition.
 +
  - Issue #17610: Don't rely on non-standard behavior of the C qsort() function.
  
 -- Issue #17357: Add missing verbosity output when using -v/-vv.
 +- Issue #17323: The "[X refs, Y blocks]" printed by debug builds has been
 +  disabled by default.  It can be re-enabled with the `-X showrefcount` option.
 +
 +- Issue #17522: Add the PyGILState_Check() API.
 +
 +- Issue #17327: Add PyDict_SetDefault.
  
  Library
  -------

diff --cc Objects/typeobject.c
Simple merge