Add dxdiag help message box

[Henri Verbeet]

2009/9/18 Brian Nguyen <mtxcoll at gmail.com>:
> Hm, okay. I just wanted to test the waters here; I'll rework this to use a
> function that loads
> a string from a resource file. Does the help message itself look okay? I
> just used the message
> provided by the native dxdiag app, but I could rework it if there are issues
> with copyright or
> wine conventions.
>
You usually shouldn't copy anything from native Windows, including
code, documentation/strings and graphics. So yes, please use your own
wording for the help message.