[PATCH] msvcp140: Implement _To_wide.

[Marvin]

Hi,

While running your changed tests on Windows, I think I found new failures.
Being a bot and all I'm not very good at pattern recognition, so I might be
wrong, but could you please double-check?
Full results can be found at
https://testbot.winehq.org/JobDetails.pl?Key=31204

Your paranoid android.


=== wvistau64 (32 bit msvcp140) ===
msvcp140.c:492: Test failed: Got unexpected output L"\05e6\05d4\f895\f893\20ac\009f"

=== wvistau64 (64 bit msvcp140) ===
msvcp140.c:492: Test failed: Got unexpected output L"\05e6\05d4\f895\f893\20ac\009f"