Fix xcopy so output is either unicode (console) or oem (file)

[Kirill K. Smirnov]

> "Kirill K. Smirnov" <lich at math.spbu.ru> wrote:
> >> The written strings in 866 and 1251 code pages are only readable
> >> when output console code page matches the string encoding.
> >
> > This is in wine.
> > In windows only cp866 is readable regardless of ConsoleOutputCP.
>
> As I said I tested under Windows (XP) only, and SetConsoleOutputCP
> does change the behaviour of WriteConsoleA for me. If it wouldn't
> I'd call it a bug.
I tested under Windows 2003 and SetConsoleOutputCP does NOT change the 
behaviour of WriteConsoleA for me.
Does Windows play us a trick?