Changed prev_hash to block_hash, state transition now uses vm env

* PREVHASH => BLOCKHASH( N )
* State transition object uses VMEnv as it's query interface
* Updated vm.Enviroment has GetHash( n ) for BLOCKHASH instruction
* Added GetHash to xeth, core, utils & test environments

1 files changed, 1 insertions, 1 deletions

diff --git a/xeth/pipe.go b/xeth/pipe.go
index cae6ee1de..05cefd8ad 100644
--- a/xeth/pipe.go
+++ b/xeth/pipe.go
@@ -87,7 +87,7 @@ func (self *XEth) ExecuteObject(object *Object, data []byte, value, gas, price *
 
 	self.Vm.State = self.World().State().Copy()
 
-	vmenv := NewEnv(self.Vm.State, block, value.BigInt(), initiator.Address())
+	vmenv := NewEnv(self.chainManager, self.Vm.State, block, value.BigInt(), initiator.Address())
 	return vmenv.Call(initiator, object.Address(), data, gas.BigInt(), price.BigInt(), value.BigInt())
 }