Revert "Move to pycore_pystate.h"

This reverts commit 6c4c52b.

Author: ZeroIntensity

Include/cpython/pystate.h

@@ -300,6 +300,10 @@ PyAPI_FUNC(void) PyInterpreterWeakRef_Close(PyInterpreterWeakRef wref);
     ref = 0;                                    \
 } while (0)
 
+// Exports for '_testcapi' shared extension
+PyAPI_FUNC(Py_ssize_t) _PyInterpreterState_Refcount(PyInterpreterState *interp);
+PyAPI_FUNC(int) _PyInterpreterState_Incref(PyInterpreterState *interp);
+
 PyAPI_FUNC(int) PyThreadState_Ensure(PyInterpreterRef interp_ref);
 
 PyAPI_FUNC(void) PyThreadState_Release(void);

Include/internal/pycore_pystate.h

@@ -328,10 +328,6 @@ _Py_RecursionLimit_GetMargin(PyThreadState *tstate)
     return Py_ARITHMETIC_RIGHT_SHIFT(intptr_t, here_addr - (intptr_t)_tstate->c_stack_soft_limit, PYOS_STACK_MARGIN_SHIFT);
 }
 
-// Exports for '_testcapi' shared extension
-PyAPI_FUNC(Py_ssize_t) _PyInterpreterState_Refcount(PyInterpreterState *interp);
-PyAPI_FUNC(int) _PyInterpreterState_Incref(PyInterpreterState *interp);
-
 #ifdef __cplusplus
 }
 #endif