msvcrt: Added _strnicmp_l implementation

[Jacek Caban]

Hi Piotr,

On 12/26/12 11:39, Piotr Caban wrote:
>          if(c1 != c2)
>              break;
> -    }while(c1 && c1==c2);
> +    }while(--count && c1 && c1==c2);

This was already present in the code, but while you're at this you could
remove duplicated char comparison in loop body and expression.

Cheers,
Jacek