Printing an array should use the same formatting as str()

If you do

``` python
A = array([[1, 2], [3, 4]])
print A
```

then you get

```
arrayObject(data=[1, 2, 3, 4], typecode=i, start=0, dimensions=[2,2], strides=[2,1])
```

It'd be nicer to give

```
[[1 2]
 [3 4]]
```

as an output instead. Right now, this can only be done by

``` python
print str(A)
```
