libstdc++ build failure on darwin5.2

[Stan Shebs]

Andreas Tobler wrote:
> 
> Hi,
> 
> since yesterday evening a lot got in in libstdc++, too much for me to
> see where I fail.

At the very least you have to move our local fixincludes workaround
from include/c_std/bits/std_cctype.h to include/c_std/cctype.

> I get the following failure on darwin5.2 (ppc)
> ----
> In file included from /Volumes/xufs/gccclean/objdir/powerpc-apple-darwin5.2/libstdc++-v3/include/cstring:40,
>                  from /Volumes/xufs/gccclean/objdir/powerpc-apple-darwin5.2/libstdc++-v3/include/bits/char_traits.h:44,
>                  from /Volumes/xufs/gccclean/objdir/powerpc-apple-darwin5.2/libstdc++-v3/include/string:46,
>                  from /Volumes/xufs/gccclean/objdir/powerpc-apple-darwin5.2/libstdc++-v3/include/bits/localefwd.h:48,
>                  from /Volumes/xufs/gccclean/objdir/powerpc-apple-darwin5.2/libstdc++-v3/include/locale:44,
>                  from c++locale.cc:36:
> /usr/include/string.h:63: syntax error before `;' token

I'm seeing this one too.  Not the first time we've been outsmarted
by Darwin's yet-another-random-BSD with _BSD_*_T macros.  As before,
we'll have to slog through #ifdef/#ifndef/#ifnoncomputablefunction
to see what's causing it this time...

Stan