Alphabetize `.arclint` linters

Summary: I'm a bit OCD with this, but I find the `.arclint` file easier to read if the keys are in alphabetical order.

Test Plan: N/A

Reviewers: #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: epriestley, Korvin

Differential Revision: https://secure.phabricator.com/D9802
Add a `PhutilAWSS3Future` class

Summary: Ref T5155. This doesn't do anything currently, but should allow us to perform S3 operations without the [[http://undesigned.org.za/2007/10/22/amazon-s3-php-class/ | Amazon S3 PHP Class]].

Test Plan: I'm not really sure how to test this... if you have any ideas then please let me know.

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: epriestley, Korvin

Maniphest Tasks: T5155

Differential Revision: https://secure.phabricator.com/D9781
Rebuild library map

Summary: Rebuild library map after D9787.

Test Plan: I forgot to run `arc liberate` as a part of D9787.

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: epriestley, Korvin

Differential Revision: https://secure.phabricator.com/D9814