update WinSDK.js to handle recursively translation files

fix issue - https://crosswalk-project.org/jira/projects/XWALK/issues/XWALK-7420?filter=allopenissues

windows/lib/WixSDK.js

@@ -226,18 +226,28 @@ function(app_path, xwalk_path, meta_data, callback) {
         return node;
     }
 
-    var locales_path = path.join(xwalk_path, 'locales', 'xwalk');
-    if (!fs.existsSync(locales_path))
-	locales_path = path.join(xwalk_path, 'locales');
-    if (fs.existsSync(locales_path)) {
-        var locales = fs.readdirSync(locales_path);
-        locales.forEach(function (locale) {
-            AddFileComponent(GetFolderNode('locales', app_root_folder), locales_path, locale);
-        });
-    } else {
-        output.error("Folder 'locales' not found in " + xwalk_path);
-        output.error("Missing i18n support");
-    }
+    function addRecursiveLocales(original_path, sub_folder, root_folder) {
+            var locales = fs.readdirSync(original_path);
+
+            locales.forEach(function(locale) {
+                var l_path = path.join(original_path, locale);
+
+                if (fs.lstatSync(l_path).isFile()) {
+                    AddFileComponent(GetFolderNode(sub_folder, root_folder), original_path, locale);
+                } else if (fs.lstatSync(l_path).isDirectory()) {
+                    addRecursiveLocales(l_path, locale, GetFolderNode(sub_folder, root_folder));
+                }
+            });
+        }
+
+        var locales_path = path.join(xwalk_path, 'locales');
+
+        if (fs.existsSync(locales_path)) {
+            addRecursiveLocales(locales_path, 'locales', app_root_folder);            
+        } else {
+            output.error("Folder 'locales' not found in " + xwalk_path);
+            output.error("Missing i18n support");
+        }
 
     // @skip_array contains absolute path of those need to be skipped, items can be
     // directory or files.