Series repr incorrect if name==0
```
In [13]: Series(range(5), name=0)
Out[13]: 
0    0
1    1
2    2
3    3
4    4

In [14]: Series(range(5), name=1)
Out[14]: 
0    0
1    1
2    2
3    3
4    4
Name: 1
```
