[PATCH] evr: Add stubs for EnhancedVideoRenderer

[Fabian Maurer]

Hi Alistair,

> Your missing some IID checks here.

You mean for example the DirectShow interfaces like 
"IAMCertifiedOutputProtection" "IMediaEventSink" and so on?

I skipped them for now, because they are not needed to fix that particular bug. 
Do I have to add all of them at once?

Regards,
Fabian Maurer