[release/1.4.6] cmd, console: split off the console into a reusable package

(cherry picked from commit ffaf58f0a9)

cmd/geth/run_test.go

@@ -45,6 +45,7 @@ type testgeth struct {
 	// template variables for expect
 	Datadir    string
 	Executable string
+	Etherbase  string
 	Func       template.FuncMap
 
 	removeDatadir bool
@@ -67,11 +68,15 @@ func init() {
 func runGeth(t *testing.T, args ...string) *testgeth {
 	tt := &testgeth{T: t, Executable: os.Args[0]}
 	for i, arg := range args {
-		if arg == "-datadir" || arg == "--datadir" {
+		switch {
+		case arg == "-datadir" || arg == "--datadir":
 			if i < len(args)-1 {
 				tt.Datadir = args[i+1]
 			}
-			break
+		case arg == "-etherbase" || arg == "--etherbase":
+			if i < len(args)-1 {
+				tt.Etherbase = args[i+1]
+			}
 		}
 	}
 	if tt.Datadir == "" {