TUN-528: Move cloudflared into a separate repo

vendor/zombiezen.com/go/capnproto2/mem_other.go

@@ -0,0 +1,12 @@
+// +build !go1.8
+
+package capnp
+
+func (e *Encoder) write(bufs [][]byte) error {
+	for _, b := range bufs {
+		if _, err := e.w.Write(b); err != nil {
+			return err
+		}
+	}
+	return nil
+}