Danny Hooper <hooper@google.com> [Mon, 06 Aug 2018 14:30:27 -0700] rev 38949
fix: pull out flag definitions to make them re-usable from extensions
This makes it cleaner to implement fix-related commands with additional
functionality while sharing some flags with the core implementation.
Differential Revision: https://phab.mercurial-scm.org/D4145