Save blame info to lint messages

Test Plan:
Applied the patch.
Looked at blame and plain blame of SVN and Git file.
Ran the lint saver.
Looked at lint messages list.
/diffusion/lint/

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D5218