Short arrays in record.inspect

Since we have array-columns (pg) `record.inspect` may outputs very long string.

So this is a fix for arrays...

I'm not sure how to test it, because I haven't found any fixture with array.

But it works. Here is a proof :)

![screenshot 2013-10-26 17 57 19](https://f.cloud.github.com/assets/348907/1413688/c6bc199e-3e47-11e3-82ca-ce8f82ac09a9.png)