luatex doesn't find files with non-ascii on windows

[Akira Kakuto]

Dear Ulrike,

> So I think that it may not be bad to make -cmdx as the
> default, and remove the option -cmdx.

Done in the latest binaries in W32TeX.
-cmdx is not necessary in the latest ones.
(The option -cmdx exists for compatibility, but it does nothing.)

Thanks,
Akira