In rivetsBinderCall, allow for binders that are pure functions(which

means they only implement routine()).

Refs: #7680

@@ -2,12 +2,20 @@ define(function(require) {
     'use strict';
     var module = require('module');
     var rivets = require('rivets');
+    var _ = require('underscore');
     var Backbone = require('backbone');
     var $ = require('jquery');
 
     var rivetsBinderCall = function(binding, binderName, methodName, args) {
         var binder = rivets.binders[binderName];
-        binder[methodName].apply(binding, args);
+        var method = binder[methodName];
+        if (_.isFunction(binder)) {
+            if (methodName === 'routine') {
+                binder.apply(binding, args);
+            }
+        } else {
+            binder[methodName].apply(binding, args);
+        }
     };
 
     var render = function(el, cmd, errorList) {