astropy/astropy — pull request #3052 by embray (2014-10-24 19:19:11+00:00)
Title: Incorrect dtype format used for string columns when initializing Table from rows on Python 3

I noticed this while testing the doctests on Python 3, in this example:

```python
>>> data_rows = [(1, 2.0, 'x'),
... (4, 5.0, 'y'),
... (5, 8.2, 'z')]
>>> t = Table(rows=data_rows, names=('a', 'b', 'c'), meta={'name': 'first table'})
>>> t
array([(1, 2.0, 'x'), (4, 5.0, 'y'), (5, 8..., 'z')],
dtype=[('a', '