Bug#839981: Upstream licensing

[Peter Colberg <peter@colberg.org>]

Dear Debian ftp-masters,

Please see these messages on pkg-go-maintainers for a review, which
discusses in particular the implications on the Debian packaging of
the novel licensing scheme devised by the upstream author.

https://lists.alioth.debian.org/pipermail/pkg-go-maintainers/Week-of-Mon-20161003/007642.html
https://lists.alioth.debian.org/pipermail/pkg-go-maintainers/Week-of-Mon-20161003/007643.html
https://lists.alioth.debian.org/pipermail/pkg-go-maintainers/Week-of-Mon-20161003/007652.html
https://lists.alioth.debian.org/pipermail/pkg-go-maintainers/Week-of-Mon-20161010/007774.html

Regards,
Peter