[CentOS] Firefox 46.0 fails on CentOS 6.7 due to GTK3 requirement

[isdtor]

Johnny Hughes writes:
[...] 
> I should have the CentOS-6 (and CentOS-5) version of Firefox 45 out in a
> couple of minutes .. currently building metadata and testing them on
> https://ci.centos.org/

Broken, at least on CentOS5. The same file/addon download problem that has plagued every new update release in I don't remember how long. File downloads go to 99% and then stop, or don't even start.