configure: add ncursesw detecting [try 2]

[Dmitry Timoshkov]

"Vitaly Lipatov" <lav at etersoft.ru> wrote:

> Dmitry, as I already post in this thread, we have test program which does not 
> print correctly ever in UTF-8 locale.
> Usual ncurses works in 8-bit locales like koi8-r correctly, but we can't 
> output in utf8 locale.

According to http://www.gnu.org/software/ncurses/ncurses.html ncurses does
support UTF-8, probably you need to update to a newer version.

-- 
Dmitry.