Use PyConfig_Get() in frozenmain.c (python#137421)

Replace private _Py_GetConfig() with public PyConfig_Get().

Remove also explicit PyRuntime initialization, it's not needed.

Author: vstinner

Python/frozenmain.c

@@ -1,8 +1,7 @@
 /* Python interpreter main program for frozen scripts */
 
 #include "Python.h"
-#include "pycore_pystate.h"       // _Py_GetConfig()
-#include "pycore_runtime.h"       // _PyRuntime_Initialize()
+#include "pycore_pystate.h"       // _PyInterpreterState_SetRunningMain()
 
 #ifdef HAVE_UNISTD_H
 #  include <unistd.h>             // isatty()
@@ -20,19 +19,14 @@ extern int PyInitFrozenExtensions(void);
 int
 Py_FrozenMain(int argc, char **argv)
 {
-    PyStatus status = _PyRuntime_Initialize();
-    if (PyStatus_Exception(status)) {
-        Py_ExitStatusException(status);
-    }
-
     PyConfig config;
     PyConfig_InitPythonConfig(&config);
     // Suppress errors from getpath.c
     config.pathconfig_warnings = 0;
     // Don't parse command line options like -E
     config.parse_argv = 0;
 
-    status = PyConfig_SetBytesArgv(&config, argc, argv);
+    PyStatus status = PyConfig_SetBytesArgv(&config, argc, argv);
     if (PyStatus_Exception(status)) {
         PyConfig_Clear(&config);
         Py_ExitStatusException(status);
@@ -64,7 +58,12 @@ Py_FrozenMain(int argc, char **argv)
     PyWinFreeze_ExeInit();
 #endif
 
-    if (_Py_GetConfig()->verbose) {
+    int verbose;
+    if (PyConfig_GetInt("verbose", &verbose) < 0) {
+        verbose = 0;
+        PyErr_Clear();
+    }
+    if (verbose) {
         fprintf(stderr, "Python %s\n%s\n",
                 Py_GetVersion(), Py_GetCopyright());
     }