This repo was forked from the upstream Archlinux vault package at
commit 9c53f44a13c0115422f2a20561aa5b22997dcb4a.
This was then modified to download from the open-vault source, and
refactored to use a global GOFLAGS, split dep downloads into prepare(),
and tidies the build() + package() functions.
References: https://gitlab.archlinux.org/archlinux/packaging/packages/vault
References: 9c53f44a13
