bpo-38116: Convert select module to PEP-384 (#15971)

* Convert select module to PEP-384

Summary: Do the necessary versions to be Pyro-compatible, including migrating `PyType_Ready` to `PyType_FromSpec` and moving static data into a new `_selectstate` struct.

* 📜🤖 Added by blurb_it.

* Fixup Mac OS/X build

Misc/NEWS.d/next/Core and Builtins/2019-09-11-14-49-42.bpo-38116.KDwmwt.rst

+The select module is now PEP-384 compliant and no longer has static state
\ No newline at end of file

Modules/clinic/selectmodule.c.h

@@ -959,11 +959,11 @@ select_kqueue(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 {
     PyObject *return_value = NULL;
 
-    if ((type == &kqueue_queue_Type) &&
+    if ((type == _selectstate_global->kqueue_queue_Type) &&
         !_PyArg_NoPositional("kqueue", args)) {
         goto exit;
     }
-    if ((type == &kqueue_queue_Type) &&
+    if ((type == _selectstate_global->kqueue_queue_Type) &&
         !_PyArg_NoKeywords("kqueue", kwargs)) {
         goto exit;
     }
@@ -1215,4 +1215,4 @@ exit:
 #ifndef SELECT_KQUEUE_CONTROL_METHODDEF
     #define SELECT_KQUEUE_CONTROL_METHODDEF
 #endif /* !defined(SELECT_KQUEUE_CONTROL_METHODDEF) */
-/*[clinic end generated code: output=03041f3d09b04a3d input=a9049054013a1b77]*/
+/*[clinic end generated code: output=26bb05e5fba2bfd1 input=a9049054013a1b77]*/