[Paraview] superbuild: fontconfig too old to compile (current does)

[Ben Boeckel]

On Tue, Oct 24, 2017 at 16:51:09 +0200, Fabian Wein wrote:
> fontconfig  2.12.1 does not compile with the error at the end of this 
> mail.
> 
> Building the current fontconfig 2.12.6 works for me, maybe the version
> could be upgraded?

I've pushed an MR for the common-superbuild here:

    https://gitlab.kitware.com/paraview/common-superbuild/merge_requests/196

Followup paraview-superbuild fix here:

    https://gitlab.kitware.com/paraview/paraview-superbuild/merge_requests/377

--Ben