[issue37499] test_gdb.test_pycfunction should use dedicated test functions

[STINNER Victor]

STINNER Victor <vstinner at redhat.com> added the comment:

> Per Victor's suggestion in GH-14330, I think we should expose a few test functions in the `testcapi` module as exemplars of their respective calling conventions and use those, rather than arbitrary builtins.

I suggest to write functions which return their arguments, so we can check that we get what we expect ;-)

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