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, 3 insertions, 2 deletions

diff --git a/eth/api.go b/eth/api.go
index 48f512b1b..7932bbcb6 100644
--- a/eth/api.go
+++ b/eth/api.go
@@ -37,6 +37,7 @@ import (
 	"github.com/ethereum/go-ethereum/logger"
 	"github.com/ethereum/go-ethereum/logger/glog"
 	"github.com/ethereum/go-ethereum/miner"
+	"github.com/ethereum/go-ethereum/params"
 	"github.com/ethereum/go-ethereum/rlp"
 	"github.com/ethereum/go-ethereum/rpc"
 	"golang.org/x/net/context"
@@ -303,13 +304,13 @@ func (api *PublicDebugAPI) DumpBlock(number uint64) (state.Dump, error) {
 // PrivateDebugAPI is the collection of Etheruem full node APIs exposed over
 // the private debugging endpoint.
 type PrivateDebugAPI struct {
-	config *core.ChainConfig
+	config *params.ChainConfig
 	eth    *Ethereum
 }
 
 // NewPrivateDebugAPI creates a new API definition for the full node-related
 // private debug methods of the Ethereum service.
-func NewPrivateDebugAPI(config *core.ChainConfig, eth *Ethereum) *PrivateDebugAPI {
+func NewPrivateDebugAPI(config *params.ChainConfig, eth *Ethereum) *PrivateDebugAPI {
 	return &PrivateDebugAPI{config: config, eth: eth}
 }