RFR: JMC-6124: Defaulting to OpenJDK 11 development launchers, and moving the old Oracle JDK 8 specific launchers

[Guru]

+1 looks good to me.
> On 03-Dec-2018, at 5:03 PM, Marcus Hirt <marcus at hirt.se> wrote:
> 
> Hi all,
> 
> Please review this fix to use OpenJDK 11 development launchers by default,
> and providing a separate set of Oracle JDK launchers.
> 
> Jira:  https://bugs.openjdk.java.net/browse/JMC-6214
> Patch: http://cr.openjdk.java.net/~hirt/JMC-6214/launcherdiff.txt
> 
> Kind regards,
> Marcus
>