[libstdc++] Problems with wctype (patch included)

[Benjamin Kosnik]

This is already on mainline, but not on the branch. It's approved for the 
branch.

> 
> 2001-08-29  Peter Schmid  <schmid@snake.iap.physik.tu-darmstadt.de>
> 
> 	* libstdc++-v3/include/c_std/bits/std_cwctype.h: expose std::wctype.
> 
> *** libstdc++-v3/include/c_std/bits/std_cwctype.h.orig	Wed Aug 29 18:19:35 2001
> --- libstdc++-v3/include/c_std/bits/std_cwctype.h	Wed Aug 29 18:19:58 2001
> ***************
> *** 56,61 ****
> --- 56,62 ----
>   #undef towupper
>   #undef towctrans
>   #undef wctrans
> + #undef wctype
>   
>   namespace std
>   {
> *************** namespace std
> *** 82,87 ****
> --- 83,94 ----
>     using ::towupper;
>     using ::towctrans;
>     using ::wctrans;
> +   using ::wctype;
>   }
>   
>   #endif