Make `long_hash` compatible with `hashfunc`

Make `long_hash` compatible with `hashfunc` · python/cpython@cd63f58

Original file line number	Diff line number	Diff line change
`@@ -3614,8 +3614,9 @@ long_dealloc(PyObject *self)`
`3614`	`3614`	`}`
`3615`	`3615`
`3616`	`3616`	`static Py_hash_t`
`3617`		`-long_hash(PyLongObject *v)`
	`3617`	`+long_hash(PyObject *obj)`
`3618`	`3618`	`{`
	`3619`	`+PyLongObject v = (PyLongObject )obj;`
`3619`	`3620`	`Py_uhash_t x;`
`3620`	`3621`	`Py_ssize_t i;`
`3621`	`3622`	`int sign;`
`@@ -6607,7 +6608,7 @@ PyTypeObject PyLong_Type = {`
`6607`	`6608`	`&long_as_number, /* tp_as_number */`
`6608`	`6609`	`0, /* tp_as_sequence */`
`6609`	`6610`	`0, /* tp_as_mapping */`
`6610`		`-(hashfunc)long_hash, /* tp_hash */`
	`6611`	`+long_hash, /* tp_hash */`
`6611`	`6612`	`0, /* tp_call */`
`6612`	`6613`	`0, /* tp_str */`
`6613`	`6614`	`PyObject_GenericGetAttr, /* tp_getattro */`