hg: jdk10/sandbox: Adding intitial POC

[christian.tornqvist at oracle.com]

Changeset: 9e4989ef97ee
Author:    ctornqvi
Date:      2017-02-21 09:16 -0500
URL:       http://hg.openjdk.java.net/jdk10/sandbox/rev/9e4989ef97ee

Adding intitial POC

+ test/lib/jdk/test/lib/artifacts/Artifact.java
+ test/lib/jdk/test/lib/artifacts/ArtifactManager.java
+ test/lib/jdk/test/lib/artifacts/ArtifactResolver.java
+ test/lib/jdk/test/lib/artifacts/DefaultArtifactManager.java