old libstdc++.so.2.7.2 and glibc 2.1

[H.J. Lu]

> 
> 
> The libstdc++ 2.7.2 libraries compiled on a glibc 2.0.x system expect some
> symbols out of libc.so.6 that are now not defined anymore. At the first
> glance those are __dup2(), __pipe(), or __waitpid(), and because of this
> clean programs compiled against libcstdc++.2.7.2 and glibc 2.0.7 will not
> work anymore.
> 

They should be put back in the global scope in libc.so. I have sent
a patch for it.

-- 
H.J. Lu (hjl@gnu.org)