Merge pull request #1236 from tgerring/ethtest

build/test-global-coverage.sh

cmd/ethtest/main.go

cmd/geth/blocktestcmd.go

tests/block_test.go

tests/block_test_util.go

tests/helper/common.go

tests/helper/init.go

tests/helper/readers.go

tests/helper/trie.go

tests/init.go

tests/state_test.go

tests/state_test_util.go

tests/transaction_test.go

tests/transaction_test_util.go

tests/util.go

tests/vm/.ethtest

tests/vm/gh_test.go

tests/vm/nowarn.go

tests/vm_test.go

tests/vm_test_util.go