Improve parsing of docblock specials
Currently the tags of following docblock are parsed as array('special' => "foo\nbar"). This diff changes the output to be array('special' => array('foo', 'bar')).
/** * @special foo * @special bar */
Test Plan: Ran unit tests.
Reviewers: epriestley, Blessed Reviewers
Reviewed By: epriestley, Blessed Reviewers
Differential Revision: https://secure.phabricator.com/D16431