R1:ca0262ef6b4d

Blacklist the use of `eval()`

Summary: Depends on D10686.

Test Plan: N/A

Reviewers: #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: Korvin, epriestley

Differential Revision: https://secure.phabricator.com/D11214