CRIS port, part 4: libstdc++-v3 parts

[Hans-Peter Nilsson]

> From: Gabriel Dos Reis <gdr@codesourcery.com>
> Date: 29 Sep 2001 18:10:04 +0200

> Please check it in,  I'll do the renaming latter.

Thanks!  (That was the fastest review ever!)

> | + __exchange_and_add (_Atomic_word* __mem, int __val)
> 
> I don't know whether this is really needed.

It is, in include/bits/basic_string.h.  I checked so I wouldn't
have to write stuff that was unused. ;-)

brgds, H-P