Including libffi as a submodule

[David Feuer]

On Tuesday, September 26, 2017 9:38:11 PM EDT Ben Gamari wrote:

> Numerous attempts have
> been made to get the libffi maintainers to cut a new release but sadly
> no progress has been made in over six months of trying.

Has anyone followed the process described in the somewhat poorly named
https://wiki.haskell.org/Taking_over_a_package to try to add one or more
maintainers upstream? If the current maintainer(s) object to that, would it make
sense to produce a proper fork on Hackage?

David