Update dependencies

- uses newer version of go-ethereum required for go1.11

vendor/github.com/ethereum/go-ethereum/cmd/abigen/main.go

@@ -29,7 +29,7 @@ import (
 )
 
 var (
-	abiFlag = flag.String("abi", "", "Path to the Ethereum contract ABI json to bind")
+	abiFlag = flag.String("abi", "", "Path to the Ethereum contract ABI json to bind, - for STDIN")
 	binFlag = flag.String("bin", "", "Path to the Ethereum contract bytecode (generate deploy method)")
 	typFlag = flag.String("type", "", "Struct name for the binding (default = package name)")
 
@@ -75,16 +75,27 @@ func main() {
 		bins  []string
 		types []string
 	)
-	if *solFlag != "" {
+	if *solFlag != "" || *abiFlag == "-" {
 		// Generate the list of types to exclude from binding
 		exclude := make(map[string]bool)
 		for _, kind := range strings.Split(*excFlag, ",") {
 			exclude[strings.ToLower(kind)] = true
 		}
-		contracts, err := compiler.CompileSolidity(*solcFlag, *solFlag)
-		if err != nil {
-			fmt.Printf("Failed to build Solidity contract: %v\n", err)
-			os.Exit(-1)
+
+		var contracts map[string]*compiler.Contract
+		var err error
+		if *solFlag != "" {
+			contracts, err = compiler.CompileSolidity(*solcFlag, *solFlag)
+			if err != nil {
+				fmt.Printf("Failed to build Solidity contract: %v\n", err)
+				os.Exit(-1)
+			}
+		} else {
+			contracts, err = contractsFromStdin()
+			if err != nil {
+				fmt.Printf("Failed to read input ABIs from STDIN: %v\n", err)
+				os.Exit(-1)
+			}
 		}
 		// Gather all non-excluded contract for binding
 		for name, contract := range contracts {
@@ -138,3 +149,12 @@ func main() {
 		os.Exit(-1)
 	}
 }
+
+func contractsFromStdin() (map[string]*compiler.Contract, error) {
+	bytes, err := ioutil.ReadAll(os.Stdin)
+	if err != nil {
+		return nil, err
+	}
+
+	return compiler.ParseCombinedJSON(bytes, "", "", "", "")
+}