[release/1.3.4] core, core/vm, crypto: fixes for homestead

* Removed some strange code that didn't apply state reverting properly
* Refactored code setting from vm & state transition to the executioner
* Updated tests

Conflicts:
	common/registrar/ethreg/api.go
	core/tx_pool.go
	core/vm/jit_test.go

1 files changed, 2 insertions, 2 deletions

diff --git a/core/database_util_test.go b/core/database_util_test.go
index 059f1ae9f..6b3793635 100644
--- a/core/database_util_test.go
+++ b/core/database_util_test.go
@@ -62,7 +62,7 @@ func (d *diffTest) UnmarshalJSON(b []byte) (err error) {
 	return nil
 }
 
-func TestDifficulty(t *testing.T) {
+func TestDifficultyFrontier(t *testing.T) {
 	file, err := os.Open("../tests/files/BasicTests/difficulty.json")
 	if err != nil {
 		t.Fatal(err)
@@ -77,7 +77,7 @@ func TestDifficulty(t *testing.T) {
 
 	for name, test := range tests {
 		number := new(big.Int).Sub(test.CurrentBlocknumber, big.NewInt(1))
-		diff := CalcDifficulty(test.CurrentTimestamp, test.ParentTimestamp, number, test.ParentDifficulty)
+		diff := calcDifficultyFrontier(test.CurrentTimestamp, test.ParentTimestamp, number, test.ParentDifficulty)
 		if diff.Cmp(test.CurrentDifficulty) != 0 {
 			t.Error(name, "failed. Expected", test.CurrentDifficulty, "and calculated", diff)
 		}