Revert "[3.7] bpo-34589: Add -X coerce_c_locale option; C locale coercion off by default (GH-9379)" (GH-9416)

This reverts commit 144f1e2c6f4a24bd288c045986842c65cc289684.
diff --git a/Programs/_testembed.c b/Programs/_testembed.c
index 029f6ad..6c35f95 100644
--- a/Programs/_testembed.c
+++ b/Programs/_testembed.c
@@ -328,8 +328,8 @@
     printf("dump_refs = %i\n", config->dump_refs);
     printf("malloc_stats = %i\n", config->malloc_stats);
 
-    printf("_coerce_c_locale = %i\n", config->_coerce_c_locale);
-    printf("_coerce_c_locale_warn = %i\n", config->_coerce_c_locale_warn);
+    printf("coerce_c_locale = %i\n", config->coerce_c_locale);
+    printf("coerce_c_locale_warn = %i\n", config->coerce_c_locale_warn);
     printf("utf8_mode = %i\n", config->utf8_mode);
 
     printf("program_name = %ls\n", config->program_name);
@@ -473,6 +473,8 @@
     putenv("PYTHONMALLOCSTATS=0");
     config.malloc_stats = 1;
 
+    /* FIXME: test coerce_c_locale and coerce_c_locale_warn */
+
     putenv("PYTHONUTF8=0");
     Py_UTF8Mode = 0;
     config.utf8_mode = 1;
@@ -542,7 +544,8 @@
     /* Test _PyCoreConfig.isolated=1 */
     _PyCoreConfig config = _PyCoreConfig_INIT;
 
-    /* Set utf8_mode to not depend on the locale */
+    /* Set coerce_c_locale and utf8_mode to not depend on the locale */
+    config.coerce_c_locale = 0;
     config.utf8_mode = 0;
     /* Use path starting with "./" avoids a search along the PATH */
     config.program_name = L"./_testembed";
diff --git a/Programs/python.c b/Programs/python.c
index c7697fa..78e48f8 100644
--- a/Programs/python.c
+++ b/Programs/python.c
@@ -6,7 +6,7 @@
 int
 wmain(int argc, wchar_t **argv)
 {
-    return _Py_WindowsMain(argc, argv);
+    return Py_Main(argc, argv);
 }
 #else
 int