gh-131238: Use pycore_interp_structs.h header (#131481)

Replace pycore_runtime_structs.h include with pycore_interp_structs.h
include in internal headers.

Include/internal/pycore_codecs.h

@@ -8,8 +8,8 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
+#include "pycore_interp_structs.h" // struct codecs_state
 #include "pycore_lock.h"          // PyMutex
-#include "pycore_runtime_structs.h"    // struct codecs_state
 
 /* Initialize codecs-related state for the given interpreter, including
    registering the first codec search function. Must be called before any other

Include/internal/pycore_fileutils.h

@@ -9,7 +9,7 @@ extern "C" {
 #endif
 
 #include <locale.h>               // struct lconv
-#include "pycore_runtime_structs.h" // _Py_error_handler
+#include "pycore_interp_structs.h" // _Py_error_handler
 
 
 /* A routine to check if a file descriptor can be select()-ed. */

Include/internal/pycore_gc.h

@@ -8,8 +8,8 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
-#include "pycore_pystate.h"
-#include "pycore_runtime_structs.h"
+#include "pycore_interp_structs.h" // PyGC_Head
+#include "pycore_pystate.h"       // _PyInterpreterState_GET()
 #include "pycore_typedefs.h"      // _PyInterpreterFrame
 
 

Include/internal/pycore_import.h

@@ -9,9 +9,9 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
-#include "pycore_lock.h"          // PyMutex
-#include "pycore_runtime_structs.h"  // _import_state
 #include "pycore_hashtable.h"     // _Py_hashtable_t
+#include "pycore_interp_structs.h" // _import_state
+#include "pycore_lock.h"          // PyMutex
 
 extern int _PyImport_IsInitialized(PyInterpreterState *);
 

Include/internal/pycore_interp.h

@@ -8,9 +8,6 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
-#include <stdbool.h>              // bool
-
-#include "pycore_runtime_structs.h"
 #include "pycore_genobject.h"     // _PyGen_FetchStopIterationValue
 
 

Include/internal/pycore_runtime.h

@@ -8,7 +8,8 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
-#include "pycore_runtime_structs.h"
+#include "pycore_runtime_structs.h" // _PyRuntimeState
+
 
 /* API */
 

Include/internal/pycore_time.h

@@ -57,7 +57,7 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
-#include "pycore_runtime_structs.h"
+#include "pycore_runtime_structs.h" // _PyTimeFraction
 
 #ifdef __clang__
 struct timeval;

Include/internal/pycore_typeobject.h

@@ -9,8 +9,8 @@ extern "C" {
 #endif
 
 #include "pycore_function.h"
+#include "pycore_interp_structs.h" // managed_static_type_state
 #include "pycore_moduleobject.h"  // PyModuleObject
-#include "pycore_runtime_structs.h" // type state
 #include "pycore_stats.h"