[libstdc++v3]: Patch to ctype-noninline.h for mingw32

[Benjamin Kosnik]

> _pctype points to ctype table for current locale, while _ctype[] is
> the classic C-locale table and is the correct choice for default
> initialisation.

Hmm. I didn't know that. You might want to look at the gnu-linux bits to 
see how this is handled.

> +  _M_table(__table == 0 ? _S_ctable : __table)  
              __table ? __table : _S_ctable

-benjamin