golang-gopkg-rethinkdb-rethinkdb-go.v6 release 6.2.1-5 for unstable

[dgit distro=debian split --quilt=gbp]
[dgit please-upload source=golang-gopkg-rethinkdb-rethinkdb-go.v6 version=6.2.1-5 upstream-tag=v6.2.1 upstream=fcfe1f12e1c9fb834ac0e68e7771dbfc0e773e4f]