python/cpython

…H-17652)

Fix test_ressources_gced_in_workers() of test_concurrent_futures:
explicitly stop the manager to prevent leaking a child process
running in the background after the test completes.

All keywords should first be checked for pointer identity. Only
after that failed for all keywords (unlikely) should unicode
equality be used.
The original code would call unicode equality on any non-matching
keyword argument. Meaning calling it often e.g. when a function
has many kwargs but only the last one is provided.

…H-17645)

Co-Authored-By: Pablo Galindo <Pablogsal@gmail.com>

…ging in comments (GH-17644)

…an regen grammar, opcodes, tokens and symbols (GH-12654)