Apply "pcre.*_limit" config options at startup in CLI environments
Apply "pcre.*_limit" config options at startup in CLI environments

Summary:
Ref T13100. Ref T13586. These options have been in production for a while and seem to consistently improve behavior, downgrading segfaults to runtime errors.

Make them global options for all CLI environments. See next change for web enviornments.

Test Plan: Ran `arc`.

Maniphest Tasks: T13586, T13100

Differential Revision: https://secure.phabricator.com/D21566

codelabs-ch/arcanist,Khan/arcanist,codelabs-ch/arcanist,Khan/arcanist,codelabs-ch/arcanist,phacility/arcanist,phacility/arcanist,codelabs-ch/arcanist,phacility/arcanist,codelabs-ch/arcanist,phacility/arcanist,Khan/arcanist,Khan/arcanist,phacility/arcanist