mlang: Make mlang tests pass under windows

[Dmitry Timoshkov]

"Maarten Lankhorst" <m.b.lankhorst at gmail.com> wrote:

> +            /* Not all codepages can be converted to UTF-8 */
> +            if (cpinfo[i].uiCodePage == 20127 || cpinfo[i].uiCodePage == 28591 || cpinfo[i].uiCodePage == 28605)
> +                expected = S_FALSE;

The statement above is not true. The reason for mlang test failures is that
apparently mlang in Windows has its own idea of supported locales not connected
to real kernel32 implementation. I'd leave the tests as they are, there is
nothing wrong in them, we can't fix Windows bugs.

-- 
Dmitry.