Add dxerr.h

[Henri Verbeet]

On 10 November 2011 02:27, Daniel Scharrer <dscharrer at gmail.com> wrote:
> +#include <dxerr9.h>
> +
> +#define DXGetErrorStringA DXGetErrorString9A
> +#define DXGetErrorStringW DXGetErrorString9W
> +#define DXGetErrorString WINELIB_NAME_AW(DXGetErrorString)
> +
> +#define DXGetErrorDescriptionA DXGetErrorDescription9A
> +#define DXGetErrorDescriptionW DXGetErrorDescription9W
> +#define DXGetErrorDescription WINELIB_NAME_AW(DXGetErrorDescription)
Which SDK version does this match?