0.15.2: Iteration over datetime index
When iterating over a Series of datetime objects that have timezone info on them, the returned value has the timezone info but also alters the time according to that timezone info, as seen in example below:

`time_points` is the index of a dataframe with values:

```
[2014-12-01 03:32:39.987000-08:00, ..., 2014-12-01 04:12:34.987000-08:00]
Length: 4, Freq: None, Timezone: tzoffset(None, -28800)
2014-12-01 03:32:39.987000-08:00
2014-12-01 03:52:38.987000-08:00
2014-12-01 04:02:36.987000-08:00
2014-12-01 04:12:34.987000-08:00 
```

However, for the following command:

```
for time in time_points:
    print time
```

the output is:

```
2014-12-01 11:32:39.987000-08:00
2014-12-01 11:52:38.987000-08:00
2014-12-01 12:02:36.987000-08:00
2014-12-01 12:12:34.987000-08:00
```
