Merge pull request #3253 from zsfelfoldi/light-topic3

common/registrar/ethreg/api.go

core/types/transaction.go

internal/ethapi/api.go

les/flowcontrol/control.go

les/handler.go

les/odr_test.go

light/lightchain.go

light/odr_test.go

p2p/discv5/net.go

p2p/discv5/table.go

p2p/discv5/ticket.go

p2p/discv5/udp.go

tests/state_test_util.go