In JDK-8213184, a rushed revert was pushed to stop breaking CI builds. A
long-term solution is needed, where test-prebuilt can be restored to
jib-profiles.js. This will require the run-test-prebuilt top-level make
target in Help.gmk to be updated as well. Also, Help.gmk should really
change name to signify that it's not just help targets, but all global
targets (some definitely more significant!)
Bug: https://bugs.openjdk.java.net/browse/JDK-8213185
WebRev:
http://cr.openjdk.java.net/~ihse/JDK-8213185-fix-run-test-prebuilt-leftovers/webrev.01
/Magnus