shdocvw: Added Support for the IViewObjectEx interface

[Jacek Caban]

Alistair Leslie-Hughes wrote:
> Hi,
>
> Changelog:
>     shdocvw: Added Support for the IViewObjectEx interface

Please check if interface you add is really supposed to be there. It's 
not the first time someone tries to add an interface to WebBrowser or 
HTMLDocument that shouldn't be there (this time the patch is already in 
Git). Please remember that the fact that an app queries for interface 
doesn't mean it should success! I keep adding tests for such cases, but 
it really easy to tests it before sending patch and it's something you 
*should* do.

Jacek