Incorrect __name__

```sh
% bpython
bpython version 0.17.dev17 on top of Python 3.5.3rc1 /usr/bin/python3
>>> __name__
'__console__'
>>> 
```

vs.

```sh
% python3
Python 3.5.3rc1 (default, Jan  3 2017, 04:40:57)
[GCC 6.3.0 20161229] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> __name__
'__main__'
>>>
```