[poppler] Fontconfig version

[Kristian Høgsberg]

Albert Astals Cid wrote:
> I've yet to begin to rewrite the fontconfig patch but i would like which would 
> be a minimum acceptable version to use, i think we could target Fontconfig 
> 2.3.0, it was released four months ago and adds the possibility of querying a 
> font given its family instead of its complete name, that can help in some 
> cases.
> 
> What do you think?

I'm not sure that we want to depend on fontconfig 2.3.0 just yet.  It's 
one of those pieces of infrastructure that everything depends on and 
that distros are slow to upgrade.  Do you think you could make it optional?

thanks,
Kristian