merge 3.4 (#23364, #23363)

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

diff --cc Misc/NEWS
index 26db7202c03fd3de543f1de14972549acfd59a3d,d0ee519013f5a1ff87ab934df426bc4b4782a52c..83eadec2c92662b50bd5390cf23eae6d70fac121
--- 1/Misc/NEWS
--- 2/Misc/NEWS
+++ b/Misc/NEWS
@@@ -226,9 -50,10 +226,13 @@@ Core and Builtin
  Library
  -------
  
 +- Issue #23326: Removed __ne__ implementations.  Since fixing default __ne__
 +  implementation in issue #21408 they are redundant.
 +
+ - Issue #23363: Fix possible overflow in itertools.permutations.
+ 
+ - Issue #23364: Fix possible overflow in itertools.product.
+ 
  - Issue #23366: Fixed possible integer overflow in itertools.combinations.
  
  - Issue #23366: Fixed possible integer overflow in itertools.combinations.