core: added basic chain configuration

Added chain configuration options and write out during genesis database
insertion. If no "config" was found, nothing is written to the database.

Configurations are written on a per genesis base. This means
that any chain (which is identified by it's genesis hash) can have their
own chain settings.

tests/vm_test_util.go

@@ -29,6 +29,7 @@ import (
 	"github.com/ethereum/go-ethereum/core/vm"
 	"github.com/ethereum/go-ethereum/ethdb"
 	"github.com/ethereum/go-ethereum/logger/glog"
+	"github.com/ethereum/go-ethereum/params"
 )
 
 func RunVmTestWithReader(r io.Reader, skipTests []string) error {
@@ -67,11 +68,6 @@ func BenchVmTest(p string, conf bconf, b *testing.B) error {
 		return fmt.Errorf("test not found: %s", conf.name)
 	}
 
-	pJit := vm.EnableJit
-	vm.EnableJit = conf.jit
-	pForceJit := vm.ForceJit
-	vm.ForceJit = conf.precomp
-
 	env := make(map[string]string)
 	env["currentCoinbase"] = test.Env.CurrentCoinbase
 	env["currentDifficulty"] = test.Env.CurrentDifficulty
@@ -99,9 +95,6 @@ func BenchVmTest(p string, conf bconf, b *testing.B) error {
 		benchVmTest(test, env, b)
 	}
 
-	vm.EnableJit = pJit
-	vm.ForceJit = pForceJit
-
 	return nil
 }
 
@@ -248,7 +241,7 @@ func RunVm(state *state.StateDB, env, exec map[string]string) ([]byte, vm.Logs,
 
 	caller := state.GetOrNewStateObject(from)
 
-	vmenv := NewEnvFromMap(state, env, exec)
+	vmenv := NewEnvFromMap(RuleSet{params.MainNetHomesteadBlock}, state, env, exec)
 	vmenv.vmTest = true
 	vmenv.skipTransfer = true
 	vmenv.initial = true