Add missing fields to ValidateAddressResult structure

ok @jrick

jsonapi.go

@@ -231,6 +231,10 @@ type ValidateAddressResult struct {
 	PubKey       string   `json:"pubkey,omitempty"`
 	IsCompressed bool     `json:"iscompressed,omitempty"`
 	Account      string   `json:"account,omitempty"`
+	Addresses    []string `json:"addresses,omitempty"`
+	Hex          string   `json:"hex,omitempty"`
+	Script       string   `json:"script,omitempty"`
+	SigsRequired int      `json:"sigsrequired,omitempty"`
 }
 
 // SignRawTransactionResult models the data from the signrawtransaction