Adds pagination support on S3Bucket.listdir

[kevinclark]

We've got folders with 1000+ things. This change makes it so we can get to them without changing code.

[lericson]

I'm all for the idea behind this change, I should note - I would love to have a listdir() that spans multiple requests. I just don't think it's a good idea to mutilate an existing method so it suites other needs.

[kevinclark]

Doh, just saw your other reply. Got it. Will consider an alternative that doesn't modify already established methods.

[kevinclark]

Ok, how's this?

[lericson]

Sorry for not getting back to you; I've been ill and am catching up with a backlog of things I need to do, so I hope I have time to make a decision here as soon as possible.

[kevinclark]

No problem. I'm happy to continue tweaking if you think it needs it. For now, we've just been running out of our own branch.

[lericson]

Boy did you ever get me confused with having a different GitHub account from the one hosting the repository. :-D

Going to try and merge this now, stop by in #sendapatch on freenode if you want some IM action going.

[lericson]

Merge S3 listing changes from Greplin

Closed by 19a078b, and also includes the secure argument to S3Bucket.