Merge tag 'upstream/4.04.0' into debian/experimental

Upstream version 4.04.0

# gpg: Signature made Sun 06 Nov 2016 19:47:59 CET
# gpg:                using RSA key 860DEF3B8F650B79
# gpg: Good signature from "Ximin Luo <infinity0@pwned.gg>" [ultimate]
# gpg:                 aka "Ximin Luo <infinity0@torproject.org>" [ultimate]
# gpg:                 aka "Ximin Luo <infinity0@freenetproject.org>" [ultimate]
# gpg:                 aka "Ximin Luo <infinity0@debian.org>" [ultimate]
# gpg:                 aka "Satoshi Nakamoto (www.bitcoin.org) <satoshin@gmx.com>" [ultimate]