core, core/state, trie: EIP158, reprice & skip empty account write

This commit implements EIP158 part 1, 2, 3 & 4

1. If an account is empty it's no longer written to the trie. An empty
  account is defined as (balance=0, nonce=0, storage=0, code=0).
2. Delete an empty account if it's touched
3. An empty account is redefined as either non-existent or empty.
4. Zero value calls and zero value suicides no longer consume the 25k
  reation costs.

params: moved core/config to params

Signed-off-by: Jeffrey Wilcke <jeffrey@ethereum.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/eth/handler_test.go b/eth/handler_test.go
index 64449afda..045bad0d4 100644
--- a/eth/handler_test.go
+++ b/eth/handler_test.go
@@ -466,7 +466,7 @@ func testDAOChallenge(t *testing.T, localForked, remoteForked bool, timeout bool
 		pow           = new(core.FakePow)
 		db, _         = ethdb.NewMemDatabase()
 		genesis       = core.WriteGenesisBlockForTesting(db)
-		config        = &core.ChainConfig{DAOForkBlock: big.NewInt(1), DAOForkSupport: localForked}
+		config        = &params.ChainConfig{DAOForkBlock: big.NewInt(1), DAOForkSupport: localForked}
 		blockchain, _ = core.NewBlockChain(db, config, pow, evmux)
 	)
 	pm, err := NewProtocolManager(config, false, NetworkId, 1000, evmux, new(testTxPool), pow, blockchain, db)
@@ -491,7 +491,7 @@ func testDAOChallenge(t *testing.T, localForked, remoteForked bool, timeout bool
 	}
 	// Create a block to reply to the challenge if no timeout is simualted
 	if !timeout {
-		blocks, _ := core.GenerateChain(nil, genesis, db, 1, func(i int, block *core.BlockGen) {
+		blocks, _ := core.GenerateChain(&params.ChainConfig{}, genesis, db, 1, func(i int, block *core.BlockGen) {
 			if remoteForked {
 				block.SetExtra(params.DAOForkBlockExtra)
 			}