core/vm: move Log to core/types

This significantly reduces the dependency closure of ethclient, which no
longer depends on core/vm as of this change.

All uses of vm.Logs are replaced by []*types.Log. NewLog is gone too,
the constructor simply returned a literal.

mobile/vm.go

@@ -21,13 +21,13 @@ package geth
 import (
 	"errors"
 
-	"github.com/ethereum/go-ethereum/core/vm"
+	"github.com/ethereum/go-ethereum/core/types"
 )
 
 // Log represents a contract log event. These events are generated by the LOG
 // opcode and stored/indexed by the node.
 type Log struct {
-	log *vm.Log
+	log *types.Log
 }
 
 func (l *Log) GetAddress() *Address  { return &Address{l.log.Address} }
@@ -40,7 +40,7 @@ func (l *Log) GetBlockHash() *Hash   { return &Hash{l.log.BlockHash} }
 func (l *Log) GetIndex() int         { return int(l.log.Index) }
 
 // Logs represents a slice of VM logs.
-type Logs struct{ logs vm.Logs }
+type Logs struct{ logs []*types.Log }
 
 // Size returns the number of logs in the slice.
 func (l *Logs) Size() int {