git: openjdk/jdk: 8316657: Support whitebox testing in microbenchmarks

[Magnus Ihse Bursie]

Changeset: 486594d4
Author:    Magnus Ihse Bursie <ihse at openjdk.org>
Date:      2023-12-11 14:17:38 +0000
URL:       https://git.openjdk.org/jdk/commit/486594d4273e9d5a8db43de861e3ca3ce823f0da

8316657: Support whitebox testing in microbenchmarks

Reviewed-by: erikj, redestad

! make/Main.gmk
! make/test/BuildMicrobenchmark.gmk
! make/test/BuildTestLib.gmk