hg: jdk/sandbox: 8213185: Properly handle run-test-prebuilt -> test-prebuilt migration

[chris.hegarty at oracle.com]

Changeset: 690fc7e5a90f
Author:    ihse
Date:      2020-02-17 08:59 +0100
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/690fc7e5a90f

8213185: Properly handle run-test-prebuilt -> test-prebuilt migration
Reviewed-by: erikj

+ make/Global.gmk
- make/Help.gmk
! make/Init.gmk
! make/RunTestsPrebuilt.gmk
! make/conf/jib-profiles.js