Message: remove message_id, query_name, query_type, query_class fields
Message: remove requirement that query_zone be case-folded, also clarify that it's wire-format
COPYRIGHT: ISC -> FSI
LICENSE: new
use relative import paths for dnstap.pb
Merge branch 'master' of ../dnstap.pb
dnstap.pb/dnstap.pb.go: update (automatically generated)
use explicit returns (golang 1.0)
dnstap.pb/dnstap.pb.go: delete
dnstap.pb.go: new

re-add the protobuf code generator output, but bring it up a level so
that we don't need to import it into the dnstap package.
don't import dnstapProto

the generated protobuf code is now inside the dnstap package
finish updating copyright statements