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

[Guru]

+1, Looks good to me.
> On 27-Feb-2019, at 11:20 PM, Marcus Hirt <marcus.hirt at oracle.com> wrote:
> 
> 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
> 
>