executeBound on var arg constructors

As mentioned earlier (#2199), `exectueBound` doesn't support all of `Function.prototype.bind` cases on constructors which take variable arguments. As the main implementation of `bind` no longer uses the native implementation, it's important we fix it.

Lodash currently supports these cases.

``` js
var D = _.bind(Date, null, 2015, 05)
new D(10);
```

Start by reproducing the issue's `_.bind(Date, null, 2015, 05)` and `new D(10)` example, then compare the result with `Function.prototype.bind` and Lodash's behavior. Done means `executeBound` supports constructors that receive variable arguments while preserving the shown constructor behavior.

Written by the indexing model from the issue text.