Review request for JMC-6412: Updating about box to support more flexible versioning

[Marcus Hirt]

Hi all,

Please review this fix to update the layout of the about box to 
better cater for various release/support model concerns.

Jira:   https://bugs.openjdk.java.net/browse/JMC-6412
Webrev: http://cr.openjdk.java.net/~hirt/JMC-6412/webrev.0/

Kind regards,
Marcus