gnupg source: binaries-have-file-conflict gnupg gnupg-curl usr/lib/gnupg/gpgkeys_curl
gnupg source: binaries-have-file-conflict gnupg gnupg-curl usr/lib/gnupg/gpgkeys_hkp
# doc merely references / cites IETF RFC: 
gnupg source: license-problem-non-free-RFC doc/OpenPGP
gnupg source: license-problem-non-free-RFC debian/copyright
