Merge branch 'develop' of https://github.com/tgerring/go-ethereum

ethutil/big_test.go

ethutil/bytes_test.go

ethutil/common.go

ethutil/common_test.go

ethutil/main_test.go

ethutil/path_test.go

ethutil/rand_test.go

ethutil/size_test.go

ethutil/value_test.go

state/main_test.go

state/state_test.go

trie/encoding_test.go

trie/main_test.go

trie/trie_test.go

vm/vm_test.go