bpo-36763: Implement the PEP 587 (GH-13592)

* Add a whole new documentation page:
  "Python Initialization Configuration"
* PyWideStringList_Append() return type is now PyStatus,
  instead of int
* PyInterpreterState_New() now calls PyConfig_Clear() if
  PyConfig_InitPythonConfig() fails.
* Rename files:

  * Python/coreconfig.c => Python/initconfig.c
  * Include/cpython/coreconfig.h => Include/cpython/initconfig.h
  * Include/internal/: pycore_coreconfig.h => pycore_initconfig.h

* Rename structures

  * _PyCoreConfig => PyConfig
  * _PyPreConfig => PyPreConfig
  * _PyInitError => PyStatus
  * _PyWstrList => PyWideStringList

* Rename PyConfig fields:

  * use_module_search_paths => module_search_paths_set
  * module_search_path_env => pythonpath_env

* Rename PyStatus field: _func => func
* PyInterpreterState: rename core_config field to config
* Rename macros and functions:

  * _PyCoreConfig_SetArgv() => PyConfig_SetBytesArgv()
  * _PyCoreConfig_SetWideArgv() => PyConfig_SetArgv()
  * _PyCoreConfig_DecodeLocale() => PyConfig_SetBytesString()
  * _PyInitError_Failed() => PyStatus_Exception()
  * _Py_INIT_ERROR_TYPE_xxx enums => _PyStatus_TYPE_xxx
  * _Py_UnixMain() => Py_BytesMain()
  * _Py_ExitInitError() => Py_ExitStatusException()
  * _Py_PreInitializeFromArgs() => Py_PreInitializeFromBytesArgs()
  * _Py_PreInitializeFromWideArgs() => Py_PreInitializeFromArgs()
  * _Py_PreInitialize() => Py_PreInitialize()
  * _Py_RunMain() => Py_RunMain()
  * _Py_InitializeFromConfig() => Py_InitializeFromConfig()
  * _Py_INIT_XXX() => _PyStatus_XXX()
  * _Py_INIT_FAILED() => _PyStatus_EXCEPTION()

* Rename 'err' PyStatus variables to 'status'
* Convert RUN_CODE() macro to config_run_code() static inline function
* Remove functions:

  * _Py_InitializeFromArgs()
  * _Py_InitializeFromWideArgs()
  * _PyInterpreterState_GetCoreConfig()

1 files changed, 12 insertions, 12 deletions

diff --git a/Python/frozenmain.c b/Python/frozenmain.c
index c3af080..c56938a 100644
--- a/Python/frozenmain.c
+++ b/Python/frozenmain.c
@@ -16,9 +16,9 @@ extern int PyInitFrozenExtensions(void);
 int
 Py_FrozenMain(int argc, char **argv)
 {
-    _PyInitError err = _PyRuntime_Initialize();
-    if (_PyInitError_Failed(err)) {
-        _Py_ExitInitError(err);
+    PyStatus status = _PyRuntime_Initialize();
+    if (PyStatus_Exception(status)) {
+        Py_ExitStatusException(status);
     }
 
     const char *p;
@@ -39,11 +39,11 @@ Py_FrozenMain(int argc, char **argv)
         }
     }
 
-    _PyCoreConfig config;
-    err = _PyCoreConfig_InitPythonConfig(&config);
-    if (_PyInitError_Failed(err)) {
-        _PyCoreConfig_Clear(&config);
-        _Py_ExitInitError(err);
+    PyConfig config;
+    status = PyConfig_InitPythonConfig(&config);
+    if (PyStatus_Exception(status)) {
+        PyConfig_Clear(&config);
+        Py_ExitStatusException(status);
     }
     config.pathconfig_warnings = 0;   /* Suppress errors from getpath.c */
 
@@ -85,10 +85,10 @@ Py_FrozenMain(int argc, char **argv)
     if (argc >= 1)
         Py_SetProgramName(argv_copy[0]);
 
-    err = _Py_InitializeFromConfig(&config);
-    _PyCoreConfig_Clear(&config);
-    if (_PyInitError_Failed(err)) {
-        _Py_ExitInitError(err);
+    status = Py_InitializeFromConfig(&config);
+    PyConfig_Clear(&config);
+    if (PyStatus_Exception(status)) {
+        Py_ExitStatusException(status);
     }
 
 #ifdef MS_WINDOWS