Excise DL_EXPORT from Include.
Thanks to Skip Montanaro and Kalle Svensson for the patches.
diff --git a/Include/structseq.h b/Include/structseq.h
index b08f04e..67cd947 100644
--- a/Include/structseq.h
+++ b/Include/structseq.h
@@ -19,10 +19,10 @@
int n_in_sequence;
} PyStructSequence_Desc;
-extern DL_IMPORT(void) PyStructSequence_InitType(PyTypeObject *type,
+PyAPI_FUNC(void) PyStructSequence_InitType(PyTypeObject *type,
PyStructSequence_Desc *desc);
-extern DL_IMPORT(PyObject *) PyStructSequence_New(PyTypeObject* type);
+PyAPI_FUNC(PyObject *) PyStructSequence_New(PyTypeObject* type);
typedef struct {
PyObject_VAR_HEAD