include: Added IShellFolderViewDual definition

[Nikolay Sivov]

On 04/28/2015 12:30 PM, Marvin wrote:
> Hi,
>
> While running your changed tests on Windows, I think I found new failures.
> Being a bot and all I'm not very good at pattern recognition, so I might be
> wrong, but could you please double-check?
> Full results can be found at
> https://testbot.winehq.org/JobDetails.pl?Key=13085
>
> Your paranoid android.
>
>
> === build (build) ===
> Patch failed to apply
>

I had another patch in a queue that broke this one, will resend.