Martin von Zweigbergk <martinvonz@google.com> [Mon, 03 Dec 2018 22:22:23 -0800] rev 41041
manifest: accept narrowmatch into constructor instead of getting from repo
The manifest should ideally not know at all about the repo, so this is
just a little step towards cleaning that up.
Differential Revision: https://phab.mercurial-scm.org/D5469