Don't store RLPs in valueNodes (except tests).

core/state/database.go

core/state/helper.go

core/state/repair.go

core/state/stateless.go

core/types/derive_sha.go

core/types/derive_sha_test.go

trie/account_node_test.go

trie/bytes_rlp.go

trie/bytes_rlp_test.go

trie/hasher.go

trie/proof_generator.go

trie/proof_generator_test.go

trie/resolver.go

trie/resolver_test.go

trie/structural_2.go

trie/structural_test.go

trie/tapes.go

trie/trie.go