bpo-47045: Remove f_state field, and make ownership of _PyInterpreterFrame explicit.
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The main purpose of this change is to avoid having to update
f_statein the interpreter, with the ultimate aim of removingRESUMEinstructions.However, removing
f_statemakes it difficult to handle clearing and freeing frames owned by generators and frame objects.So, I've had to add the
ownerfield to make it explicit who owns the memory in a_PyInterpreterFrameFinally, we now track the kind of tracing event on the thread state. This seems to be necessary to maintain the semantics of
frame.set_lineno.https://bugs.python.org/issue47045