And move a couple other types down into leafier packages. Now cmd/tailscale doesn't bring in netlink, magicsock, wgengine, etc. Fixes #1181 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
Also, make cmd/cloner's top-level "func Clone" generation opt-in. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>