[poppler] Moving up our "minimum" Linux base

[Adam Reichold]

Hello Albert,

Am 03.02.19 um 14:39 schrieb Albert Astals Cid:
> Right now our minimum Linux base as "guaranteed" by the gitlab CI is
> Ubuntu 14.04. Since that is going out of support even by Canonical
> this April I'd like to move that "minimum" to Ubuntu 16.04.
> 
> Particularly that means we could start requiring features available in gcc 5.4
> 
> Anyone against this?

Didn't you mention some company-internal regression test runners that
would still tie us to GCC 4.9?

> Cheers,
>   Albert

Best regards,
Adam