[libstdc++] Patch for include/bits/stl_iterator_base_types.h

[Peter Schmid]

There is a typo in the file include/bits/stl_iterator_base_types.h. 
The underscore in the pragma GCC system_header is missing.   

2001-04-03  Peter Schmid  <schmid@snake.iap.physik.tu-darmstadt.de>

* include/bits/stl_iterator_base_types.h: Fix typo
	  
*** libstdc++-v3/include/bits/stl_iterator_base_types.h.orig	Tue Apr  3 14:41:16 2001
--- libstdc++-v3/include/bits/stl_iterator_base_types.h	Tue Apr  3 21:09:09 2001
***************
*** 36,42 ****
  // The internal file stl_iterator.h contains predefined iterators, 
  // such as front_insert_iterator and istream_iterator.
  
! #pragma GCC system header
  
  namespace std
  {
--- 36,42 ----
  // The internal file stl_iterator.h contains predefined iterators, 
  // such as front_insert_iterator and istream_iterator.
  
! #pragma GCC system_header
  
  namespace std
  {