Use neutral language instead of default on Windows

Most notably, this affects some Windows specific error messages, which
are no longer in the default language of the system, to better match
error messages provided by PHP which are not localized anyway.

This also affects the com_dotnet extension, where it could fix some
DCOM related issues.  Furthermore, the constant `LOCALE_NEUTRAL` is
added, which can be used for `variant_cmp()`.

Closes GH-7613.

Author: DmitryMaksimov

UPGRADING

@@ -108,6 +108,9 @@ PHP 8.2 UPGRADE NOTES
 10. New Global Constants
 ========================================
 
+- COM_DOTNET:
+  . LOCALE_NEUTRAL
+
 ========================================
 11. Changes to INI File Handling
 ========================================
@@ -116,6 +119,10 @@ PHP 8.2 UPGRADE NOTES
 12. Windows Support
 ========================================
 
+- Core:
+  . Windows specific error messages are no longer localized, but instead in
+    English to better match PHP error messages.
+
 ========================================
 13. Other Changes
 ========================================

ext/com_dotnet/com_extension.c

@@ -245,6 +245,7 @@ PHP_MINIT_FUNCTION(com_dotnet)
 	COM_CONST(VARCMP_GT);
 	COM_CONST(VARCMP_NULL);
 	COM_CONST(LOCALE_SYSTEM_DEFAULT);
+	COM_CONST(LOCALE_NEUTRAL);
 
 	COM_CONST(NORM_IGNORECASE);
 	COM_CONST(NORM_IGNORENONSPACE);

ext/com_dotnet/com_handlers.c

@@ -326,7 +326,7 @@ static zend_function *com_method_get(zend_object **object_ptr, zend_string *name
 
 			if (SUCCEEDED(ITypeInfo_GetTypeComp(obj->typeinfo, &comp))) {
 				olename = php_com_string_to_olestring(name->val, name->len, obj->code_page);
-				lhash = LHashValOfNameSys(SYS_WIN32, LOCALE_SYSTEM_DEFAULT, olename);
+				lhash = LHashValOfNameSys(SYS_WIN32, LOCALE_NEUTRAL, olename);
 
 				if (SUCCEEDED(ITypeComp_Bind(comp, olename, lhash, INVOKE_FUNC, &TI, &kind, &bindptr))) {
 					switch (kind) {
@@ -410,7 +410,7 @@ static int com_objects_compare(zval *object1, zval *object2)
 	obja = CDNO_FETCH(object1);
 	objb = CDNO_FETCH(object2);
 
-	switch (VarCmp(&obja->v, &objb->v, LOCALE_SYSTEM_DEFAULT, 0)) {
+	switch (VarCmp(&obja->v, &objb->v, LOCALE_NEUTRAL, 0)) {
 		case VARCMP_LT:
 			ret = -1;
 			break;

ext/com_dotnet/com_iterator.c

@@ -200,7 +200,7 @@ zend_object_iterator *php_com_iter_get(zend_class_entry *ce, zval *object, int b
 	} else {
 		/* can we enumerate it? */
 		if (FAILED(IDispatch_Invoke(V_DISPATCH(&obj->v), DISPID_NEWENUM,
-						&IID_NULL, LOCALE_SYSTEM_DEFAULT, DISPATCH_METHOD|DISPATCH_PROPERTYGET,
+						&IID_NULL, LOCALE_NEUTRAL, DISPATCH_METHOD|DISPATCH_PROPERTYGET,
 						&dp, &v, NULL, NULL))) {
 			goto fail;
 		}

win32/winutil.c

@@ -29,7 +29,7 @@ PHP_WINUTIL_API char *php_win32_error_to_msg(HRESULT error)
 
 	DWORD ret = FormatMessageW(
 		FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
-		NULL, error, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),	(LPWSTR)&bufw, 0, NULL
+		NULL, error, MAKELANGID(LANG_NEUTRAL, SUBLANG_NEUTRAL),	(LPWSTR)&bufw, 0, NULL
 	);
 
 	if (!ret || !bufw) {