Series.view fails when series has a dtype of `object` (behavior change from 0.12)
As per the title, `Series.view(…)` fails when the `dtype` is `"object"`:

```
In [1]: import pandas as pd

In [2]: s = pd.Series([u'a', u'b', u'c'])

In [3]: s.view(pd.Series)
---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-3-abcb4acb36d2> in <module>()
----> 1 s.view(pd.Series)

/Users/wolever/code/sandbox/env/sandbox/lib/python2.7/site-packages/pandas/core/series.pyc in view(self, dtype)
    363 
    364     def view(self, dtype=None):
--> 365         return self._constructor(self.values.view(dtype),
    366                                  index=self.index).__finalize__(self)
    367 

TypeError: Cannot change data-type for object array.

In [4]: pd.__version__
Out[4]: '0.14.1'
```

Compare with the behavior of `0.12`:

```
In [1]: import pandas as pd

In [2]: s = pd.Series([u'a', u'b', u'c'])

In [3]: s.view(pd.Series)
Out[3]: 
0    a
1    b
2    c
dtype: object

In [4]: pd.__version__
Out[4]: '0.12.0'
```
