Dropping X11 VCL backend

[Chris Sherlock]

> On 30 Dec 2020, at 3:31 am, Thorsten Behrens <thb at libreoffice.org> wrote:
> 
> Chris Sherlock wrote:
> 
>> I asked before, but in the X11SalGraphicsImpl::supportOperation(),
>> it seems to be checking to see if the X Server supports
>> XRender. Hopefully I’m reading the code right. If I am reading that
>> right, are there any distributions that ship X11 *without* XRender?
>> 
> I believe that's the wrong question to ask - there's always going to be a fringe use case where Xrender is not (easily) available. Old, or
> remote X11 comes to mind.
> 
> So either we suck it up, deprecate the feature, give it some time & remove it - or we don't if it's ~easy to retain. ;)

I would be all for that! The question is, how do we get consensus for this, and if we get it how long do we keep it deprecated for before we remove it?

Chris