Merge pull request #2457 from fjl/license-update-1.4

.mailmap

AUTHORS

accounts/abi/event_test.go

accounts/key_store_plain.go

build/update-license.go

cmd/abigen/main.go

cmd/geth/js.go

cmd/utils/client.go

cmd/utils/jeth.go

common/natspec/natspec.go

common/natspec/natspec_e2e_test.go

common/natspec/natspec_test.go

core/block_validator.go

core/default_genesis.go

core/gaspool.go

core/headerchain.go

core/state/iterator_test.go

core/state/statedb_test.go

core/state_processor.go

core/types.go