[issue11410] Use GCC visibility attrs in PyAPI_*

[Martin v. Löwis]

Martin v. Löwis <martin at v.loewis.de> added the comment:

Exporting the SizeT functions on all systems is fine. It's not true that they aren't declared: they are declared in modsupport.h if PY_SSIZE_T_CLEAN is defined. Else they are not declared.

The patch looks fine to. I agree that mere cleanup shouldn't get committed along with substantial changes.

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