re PR libstdc++/11784 (atomic __exchange_and_add() broken for ColdFire and 68000 targets.)

2003-08-07  Bernardo Innocenti  <bernie@develer.com>

	PR libstdc++/11784
	* libstdc++-v3/config/cpu/m68k/atomicity.h (__exchange_and_add):
	Replace variants with new BSET-based version.

[[Split portion of a mixed commit.]]

From-SVN: r70231.2

libstdc++-v3/config/cpu/m68k/atomicity.h

 // Low-level functions for atomic operations: m68k version -*- C++ -*-
 
-// Copyright (C) 2001, 2002 Free Software Foundation, Inc.
+// Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the