hg: jdk/jdk: 8243988: Added flexibility in build system for unusal hotspot configurations

[magnus.ihse.bursie at oracle.com]

Changeset: b97a332b8482
Author:    ihse
Date:      2020-04-28 19:41 +0200
URL:       https://hg.openjdk.java.net/jdk/jdk/rev/b97a332b8482

8243988: Added flexibility in build system for unusal hotspot configurations
Reviewed-by: erikj

! make/ModuleTools.gmk
! make/RunTestsPrebuiltSpec.gmk
! make/autoconf/boot-jdk.m4
! make/autoconf/spec.gmk.in
! make/hotspot/lib/JvmFeatures.gmk