Checkbox [ngModel] does not reflect model value when updated in (onModelChange)

**I'm submitting a ...** (check one with "x")
```
[x] bug report
[ ] feature request
[ ] support request
```

**Current behavior**
``````
Behaves exactly like:
``````

The checkbox only reflects the model value when it is first rendered, but then becomes functionally equivalent to a checkbox without a binding. Manually detecting changes or using `setTimeout` inside `(ngModelChange)` does not work around this issue. The same workarounds _do_ work when used with `(click)`, but voids the use of `[ngModel]`.

**Expected behavior**
The logic in `onChanges` should run, and the view should then be updated to reflect the model's current value.

**Minimal reproduction of the problem with instructions**
http://plnkr.co/edit/g9niPnLsUy6wWbzm0mHi?p=preview

**What is the motivation / use case for changing the behavior?**
`[ngModel]` should always reflect the model value.

**Please tell us about your environment:**
Mac OS X Sierra, IntelliJ IDEA

* **Angular version:**
2.2.0

* **Browser:**
all

* **Language:** [all | TypeScript X.X | ES6/7 | ES5]
TypeScript 2.0.2

从链接的 Plunker 复现开始，检查使用 [ngModel] 和 (ngModelChange) 的复选框，然后跟踪模型更新如何到达视图。通过确保复选框在 onChanges 运行后反映当前模型值来确认修复，包括处理程序期间所做的更改。

由索引模型根据 Issue 内容生成。