Issue #2443: Added a new macro, Py_VA_COPY, which is equivalent to C99
va_copy, but available on all python platforms.  Untabified a few
unrelated files.
diff --git a/Objects/bytesobject.c b/Objects/bytesobject.c
index c0c82f7..41c86d9 100644
--- a/Objects/bytesobject.c
+++ b/Objects/bytesobject.c
@@ -173,15 +173,7 @@
     char *s;
     PyObject* string;
 
-#ifdef VA_LIST_IS_ARRAY
-    Py_MEMCPY(count, vargs, sizeof(va_list));
-#else
-#ifdef  __va_copy
-    __va_copy(count, vargs);
-#else
-    count = vargs;
-#endif
-#endif
+    Py_VA_COPY(count, vargs);
     /* step 1: figure out how large a buffer we need */
     for (f = format; *f; f++) {
         if (*f == '%') {