from https://github.com/OpenNMS/jrobin/releases
Replaces 1.5.9.1 from 2008-09-05
Needed for Java 9 to remove dependency on Sun private classes.
No modifications, but includes only core, data, and graph;
cmd, convertor, inspector, and tests are not included.
Using source instead of jar because:
 - Release jar not available
 - Additional change will be needed for Java 9
   to remove dependency on Sun private classes, see:
   https://github.com/OpenNMS/jrobin/issues/3