gh-106320: Remove private AC converter functions (#108505)

Move these private functions to the internal C API
(pycore_abstract.h):

* _Py_convert_optional_to_ssize_t()
* _PyNumber_Index()

Argument Clinic now emits #include "pycore_abstract.h" when these
functions are used.

The parser of the c-analyzer tool now uses a list of files which use
the limited C API, rather than a list of files using the internal C
API.

Objects/clinic/bytearrayobject.c.h

@@ -7,6 +7,7 @@ preserve
 #  include "pycore_runtime.h"       // _Py_ID()
 #endif
 
+#include "pycore_abstract.h"       // _PyNumber_Index()
 
 static int
 bytearray___init___impl(PyByteArrayObject *self, PyObject *arg,
@@ -1284,4 +1285,4 @@ bytearray_sizeof(PyByteArrayObject *self, PyObject *Py_UNUSED(ignored))
 {
     return bytearray_sizeof_impl(self);
 }
-/*[clinic end generated code: output=cb94d7ac45f0a4b7 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=d388e9027b333f00 input=a9049054013a1b77]*/

Objects/clinic/bytesobject.c.h

@@ -7,6 +7,7 @@ preserve
 #  include "pycore_runtime.h"       // _Py_ID()
 #endif
 
+#include "pycore_abstract.h"       // _PyNumber_Index()
 
 PyDoc_STRVAR(bytes___bytes____doc__,
 "__bytes__($self, /)\n"
@@ -1060,4 +1061,4 @@ skip_optional_pos:
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=f4e85363c79c64d3 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=9da56b6c04914e18 input=a9049054013a1b77]*/

Objects/clinic/listobject.c.h

@@ -7,6 +7,7 @@ preserve
 #  include "pycore_runtime.h"       // _Py_ID()
 #endif
 
+#include "pycore_abstract.h"       // _PyNumber_Index()
 
 PyDoc_STRVAR(list_insert__doc__,
 "insert($self, index, object, /)\n"
@@ -383,4 +384,4 @@ list___reversed__(PyListObject *self, PyObject *Py_UNUSED(ignored))
 {
     return list___reversed___impl(self);
 }
-/*[clinic end generated code: output=2ca109d8acc775bc input=a9049054013a1b77]*/
+/*[clinic end generated code: output=537a17b562c57505 input=a9049054013a1b77]*/

Objects/clinic/longobject.c.h

@@ -7,6 +7,7 @@ preserve
 #  include "pycore_runtime.h"       // _Py_ID()
 #endif
 
+#include "pycore_abstract.h"       // _PyNumber_Index()
 
 static PyObject *
 long_new_impl(PyTypeObject *type, PyObject *x, PyObject *obase);
@@ -475,4 +476,4 @@ int_is_integer(PyObject *self, PyObject *Py_UNUSED(ignored))
 {
     return int_is_integer_impl(self);
 }
-/*[clinic end generated code: output=75ed306fff493ba1 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=ea9c87ea532dadbe input=a9049054013a1b77]*/

Objects/clinic/unicodeobject.c.h

@@ -7,6 +7,7 @@ preserve
 #  include "pycore_runtime.h"       // _Py_ID()
 #endif
 
+#include "pycore_abstract.h"       // _PyNumber_Index()
 
 PyDoc_STRVAR(EncodingMap_size__doc__,
 "size($self, /)\n"
@@ -1504,4 +1505,4 @@ skip_optional_pos:
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=2e1e1b136ef1b681 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=a64776a3ea1c970c input=a9049054013a1b77]*/

Objects/floatobject.c

@@ -4,6 +4,7 @@
    for any kind of float exception without losing portability. */
 
 #include "Python.h"
+#include "pycore_abstract.h"      // _PyNumber_Index()
 #include "pycore_dtoa.h"          // _Py_dg_dtoa()
 #include "pycore_floatobject.h"   // _PyFloat_FormatAdvancedWriter()
 #include "pycore_initconfig.h"    // _PyStatus_OK()

Objects/stringlib/clinic/transmogrify.h.h

@@ -7,6 +7,7 @@ preserve
 #  include "pycore_runtime.h"       // _Py_ID()
 #endif
 
+#include "pycore_abstract.h"       // _PyNumber_Index()
 
 PyDoc_STRVAR(stringlib_expandtabs__doc__,
 "expandtabs($self, /, tabsize=8)\n"
@@ -278,4 +279,4 @@ stringlib_zfill(PyObject *self, PyObject *arg)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=00e34c03331699fe input=a9049054013a1b77]*/
+/*[clinic end generated code: output=a0338b2d41671b17 input=a9049054013a1b77]*/