R1:2e96565f675d

Faster 'All Revisions and Reviews' Query

Summary:
The 'All Revisions and Reviews' Query takes about 2 seconds when I run
it from the mysql command-line:

SELECT revision.*
FROM `differential_revision` revision LEFT JOIN
`differential_relationship` relationship
ON revision.id = relationship.revisionID
AND relationship.relation = 'revw'
WHERE revision.authorPHID in ('PHID-USER-a113b9ae4ee9524d0a20') OR
relationship.objectPHID in ('PHID-USER-a113b9ae4ee9524d0a20')
GROUP BY revision.id ORDER BY dateModified…