hg: jdk9/sandbox: 2 new changesets

[magnus.ihse.bursie at oracle.com]

Changeset: 6246e03c07e0
Author:    ihse
Date:      2016-12-09 18:32 +0100
URL:       http://hg.openjdk.java.net/jdk9/sandbox/rev/6246e03c07e0

Add top-level "print-tests" target.

! make/Init.gmk

Changeset: 6d1c9a4462c3
Author:    ihse
Date:      2016-12-09 18:32 +0100
URL:       http://hg.openjdk.java.net/jdk9/sandbox/rev/6d1c9a4462c3

Document some things left to do.

! make/RunTests.gmk