Implementation of an OAuth 2.0 server for Phabricator, as described here: http://tools.ietf.org/html/draft-ietf-oauth-v2-23

In other words, this project makes Phabricator an OAuth 2.0 server / provider.

This is a good idea so that Phabricator can potentially be the master authority service for a given company or subset of tools within a company. Phacility is also very interested in setting up a "master" Phabricator instance which is the central authority service for "child" Phabricator instances as part of providing Phabricator in a SaaS format.