git: openjdk/mobile: 8243656: Shell built-in test in configure depends on help

[duke]

Changeset: a3443d0f
Author:    Michael Zucchi <notzed at gmail.com>
Committer: Severin Gehwolf <sgehwolf at openjdk.org>
Date:      2020-04-27 11:00:29 +0000
URL:       https://git.openjdk.java.net/mobile/commit/a3443d0f

8243656: Shell built-in test in configure depends on help

Help might not be available to check for built-ins: Use 'command -v' instead

Reviewed-by: erikj

! make/autoconf/util.m4