[PATCH 1 of 4] match: make nevermatcher an exact matcher and a prefix matcher

[Yuya Nishihara]

On Mon, 10 Jul 2017 10:27:41 -0700, Martin von Zweigbergk via Mercurial-devel wrote:
> # HG changeset patch
> # User Martin von Zweigbergk <martinvonz at google.com>
> # Date 1499638767 25200
> #      Sun Jul 09 15:19:27 2017 -0700
> # Node ID 0ce91c7d311a808b253c3b4d406e137168c95130
> # Parent  062c1bde178118b7c4d5abb1ead16ac8ad494280
> match: make nevermatcher an exact matcher and a prefix matcher

Queued 1, 2, and 4, thanks.