Summary: There are lots of callsites to $changeset->getFilename() so it seemed easier to rename getFileName() to getFilename() even if it includes database change. Plus I think that getFilename() is better. Test Plan: Alter database. Open revision. Reviewers: epriestley Reviewed By: epriestley CC: aran Differential Revision: https://secure.phabricator.com/D1437