Branch merge

diff --cc Misc/NEWS
index 662efe7c61fe4fc2a329acd02d669d1edfd8cf16,30761e7057522e3a1d4b199a599dcf9b6d41a58d..2886160a6a37fa08525eb026fefb23b894790816
--- 1/Misc/NEWS
--- 2/Misc/NEWS
+++ b/Misc/NEWS
@@@ -271,8 -271,9 +271,11 @@@ Core and Builtin
  Library
  -------
  
+ - Issue #8286: The distutils command sdist will print a warning message instead
+   of crashing when an invalid path is given in the manifest template.
+ 
 +- Issue #12878: Expose a __dict__ attribute on io.IOBase and its subclasses.
 +
  - Issue #12636: IDLE reads the coding cookie when executing a Python script.
  
  - Issue #12494: On error, call(), check_call(), check_output() and