bpo-32030: Add more options to _PyCoreConfig (#4485)

Py_Main() now handles two more -X options:

* -X showrefcount: new _PyCoreConfig.show_ref_count field
* -X showalloccount: new _PyCoreConfig.show_alloc_count field
diff --git a/Modules/main.c b/Modules/main.c
index 70c1c3d..e5e4f33 100644
--- a/Modules/main.c
+++ b/Modules/main.c
@@ -1384,6 +1384,14 @@
     }
     core_config->allocator = Py_GETENV("PYTHONMALLOC");
 
+    /* -X options */
+    if (pymain_get_xoption(pymain, L"showrefcount")) {
+        core_config->show_ref_count = 1;
+    }
+    if (pymain_get_xoption(pymain, L"showalloccount")) {
+        core_config->show_alloc_count = 1;
+    }
+
     /* More complex options: env var and/or -X option */
     if (pymain_get_env_var("PYTHONFAULTHANDLER")
        || pymain_get_xoption(pymain, L"faulthandler")) {
@@ -1391,7 +1399,7 @@
     }
     if (pymain_get_env_var("PYTHONPROFILEIMPORTTIME")
        || pymain_get_xoption(pymain, L"importtime")) {
-        core_config->importtime = 1;
+        core_config->import_time = 1;
     }
     if (pymain_init_tracemalloc(pymain) < 0) {
         return -1;