This makes it possible to provide armv7 as additional architecture in
Alpine, next to armhf. See the discussion in this ML thread:
<https://lists.alpinelinux.org/alpine-devel/6271.html>
It's done by adding armv7 next to armhf in the arch line and also
!armv7 where the arch line said !armhf. The following script was used:
There are already two packages that require yojson and not biniou or
easy-format, but fails to build when ocaml-biniou-dev and
ocaml-easy-format-dev are not installed, so they are probably needed
as transitive dependencies.
