wstring class not defined - fix

[Paolo Carlini]

Doron Wloschowsky wrote:

>I discovered that side strings are not defined in the string file. After checking the file I discovered that the wstring definition was commented out. I uncommented it and try to compile my code only to get a compile error form line 343 in bastring.h.
>
Hi. There is no 'bastring.h' in any official modern release of gcc. 
Probably you are using 2.95.x or 2.96-RH, not an official FSF release.

In gcc-3.2.x wstrings are known to work well out-of-the-box.

Ciao,
Paolo.