Add a clause to the PY_FORMAT_SIZE_T to stop warnings on 32 bit intel

linux with gcc 4.0.2, after talking to Tim.
  <ymmit> But it won't break anything anywhere, so don't worry :-)

Include/pyport.h

@@ -124,7 +124,9 @@ typedef Py_intptr_t	Py_ssize_t;
  * Py_ssize_t on the platform.
  */
 #ifndef PY_FORMAT_SIZE_T
-#   if SIZEOF_SIZE_T == SIZEOF_LONG
+#   if SIZEOF_SIZE_T == SIZEOF_INT
+#       define PY_FORMAT_SIZE_T ""
+#   elif SIZEOF_SIZE_T == SIZEOF_LONG
 #       define PY_FORMAT_SIZE_T "l"
 #   elif defined(MS_WINDOWS)
 #       define PY_FORMAT_SIZE_T "I"