Adding open-vm-tools to core group

[Ravindra Kumar]

> *but* please undersatdn with your argumentation a lot of maintainers
> could claim that their packages are in CORE for several reasons
> because they are expected to be used from most users

> please leave core be what core means

> and as i clearly statet that i have open-vm-tools on nearly any
> of my setups please respect that i try to speak for other users
> which are not using VMware

I got your point. I will follow the approach of creating a new
group as suggested by Bill.

Thanks,
Ravindra