Preserve globals of smart contracts into account state. (#151)

* Revert "Changed to urfave/cli for the shell, added autocompletion, some 80 col changes. (#121)"

This reverts commit 67033d2.

* sys/const, contract, db: Preserve globals for contracts.

cmd/wavelet/main.go

@@ -61,17 +61,7 @@ type Config struct {
 }
 
 func main() {
-	log.SetWriter(
-		log.LoggerWavelet,
-		log.NewConsoleWriter(nil, log.FilterFor(
-			log.ModuleNode,
-			log.ModuleNetwork,
-			log.ModuleSync,
-			log.ModuleConsensus,
-			log.ModuleContract,
-		)),
-	)
-
+	log.SetWriter(log.LoggerWavelet, log.NewConsoleWriter(nil, log.FilterFor(log.ModuleNode, log.ModuleNetwork, log.ModuleSync, log.ModuleConsensus, log.ModuleContract)))
 	logger := log.Node()
 
 	app := cli.NewApp()
@@ -176,15 +166,13 @@ func main() {
 	}
 
 	// apply the toml before processing the flags
-	app.Before = altsrc.InitInputSourceWithContext(
-		app.Flags, func(c *cli.Context) (altsrc.InputSourceContext, error) {
-			filePath := c.String("config")
-			if len(filePath) > 0 {
-				return altsrc.NewTomlSourceFromFile(filePath)
-			}
-			return &altsrc.MapInputSource{}, nil
-		},
-	)
+	app.Before = altsrc.InitInputSourceWithContext(app.Flags, func(c *cli.Context) (altsrc.InputSourceContext, error) {
+		filePath := c.String("config")
+		if len(filePath) > 0 {
+			return altsrc.NewTomlSourceFromFile(filePath)
+		}
+		return &altsrc.MapInputSource{}, nil
+	})
 
 	cli.VersionPrinter = func(c *cli.Context) {
 		fmt.Printf("Version:    %s\n", c.App.Version)
@@ -228,9 +216,9 @@ func main() {
 	sort.Sort(cli.FlagsByName(app.Flags))
 	sort.Sort(cli.CommandsByName(app.Commands))
 
-	if err := app.Run(os.Args); err != nil {
-		logger.Fatal().Err(err).
-			Msg("Failed to parse configuration/command-line arguments.")
+	err := app.Run(os.Args)
+	if err != nil {
+		logger.Fatal().Err(err).Msg("Failed to parse configuration/command-line arguments.")
 	}
 }