Switched gutil.log to fancyLog due to deprecation (#9432)

scripts/gulp-tasks.js

@@ -15,7 +15,7 @@ const path = require("path");
 const pump = require("pump");
 const chalk = require("chalk");
 const through = require("through2");
-const gutil = require("gulp-util");
+const fancyLog = require("fancy-log");
 const rename = require("gulp-rename");
 const RootMostResolvePlugin = require("webpack-dependency-suite")
   .RootMostResolvePlugin;
@@ -92,14 +92,14 @@ function webpackBuild(opts) {
   return webpackStream(config, webpack);
   // To write JSON for debugging:
   /*return webpackStream(config, webpack, (err, stats) => {
-    require('gulp-util').log(stats.toString({colors: true}));
+    require('fancy-log')(stats.toString({colors: true}));
     require('fs').writeFileSync('webpack-debug.json', JSON.stringify(stats.toJson()));
   });*/
 }
 
 function logUglify() {
   return through.obj(function(file, enc, callback) {
-    gutil.log(
+    fancyLog(
       `Minifying '${chalk.cyan(
         path.relative(path.join(__dirname, ".."), file.path)
       )}'...`
@@ -110,7 +110,7 @@ function logUglify() {
 
 function logNoUglify() {
   return through.obj(function(file, enc, callback) {
-    gutil.log(
+    fancyLog(
       chalk.yellow(
         `Skipped minification of '${chalk.cyan(
           path.relative(path.join(__dirname, ".."), file.path)