Review request for JMC-6600: Making JOverflow part of the core distribution

[Marcus Hirt]

Hi all,

Please review this fix to make JOverflow part of the core
distribution. Also refreshes the JOverflow icon(s).

Jira:   https://bugs.openjdk.java.net/browse/JMC-6600
Webrev: http://cr.openjdk.java.net/~hirt/JMC-6600/webrev.0/

Kind regards,
Marcus