Misc/NEWS.d/next/Core and Builtins/2020-03-15-03-52-01.bpo-39965.Od3ZdP.rst

Correctly raise ``SyntaxError`` if *await* is used inside non-async
functions and ``PyCF_ALLOW_TOP_LEVEL_AWAIT`` is set (like in the asyncio
REPL). Patch by Pablo Galindo.