core/vm: add a reverted flag in vm contract

which is used to indicate whether state revert happen during
state transition.

if child's revert flag been set, it will also affect its parent
recursively

core/vm/contract.go

@@ -62,6 +62,8 @@ type Contract struct {
 	Args []byte
 
 	DelegateCall bool
+	Reverted     bool // use to represent whether transaction is reverted during state transition
+	// child's reverted field changed will also affect parent.
 }
 
 // NewContract returns a new contract environment for the execution of EVM.
@@ -151,3 +153,12 @@ func (self *Contract) SetCallCode(addr *common.Address, hash common.Hash, code [
 	self.CodeHash = hash
 	self.CodeAddr = addr
 }
+
+// MarkReverted mark current transaction's execution has meet revert.
+func (self *Contract) MarkReverted() {
+	self.Reverted = true
+	// affect parent recursively
+	if parent, ok := self.caller.(*Contract); ok {
+		parent.MarkReverted()
+	}
+}