In Terminal code: Skip the "stdio" layer altogether. It appears that, starting with...

In Terminal code: Skip the "stdio" layer altogether. It appears that, starting with VS2015, it is no longer possible to connect stdout/stderr to a terminal allocated via AllocConsole() in a way that doesn't mess up UTF-8 strings before they arrive at the terminal. So we have to write to the terminal directly via Win32 API from now on...