[try 4] Add help message box to dxdiag implementation

[Nikolay Sivov]

Brian Nguyen wrote:
> This patch adds a simple help message box to dxdiag; this change is 
> intentionally small in order to start implementing features of dxdiag 
> incrementally. How does it look?
>
> -- 
> Brian Nguyen
> mtxcoll at gmail.com <mailto:mtxcoll at gmail.com>
> --- /dev/null
> +++ b/programs/dxdiag/En.rc
> @@ -0,0 +1,13 @@
> +#include "dxdiag_res.h"
> +
> +STRINGTABLE
> +{
You should add a license header for new created files.