The JMC launchers (in Eclipse) and Execution Environment.

[Marcus Hirt]

Hi all,

Now that there is a downloadable plug-in for JDK 11 support for Eclipse 
2018-09, we could upgrade the launchers to use JavaSE-11 as default execution 
environment.

We could either just update the existing launchers, or update and add new 
launchers for those who still wish to be able to launch on Oracle JDK 8-10.
What do you think?

Kind regards,
Marcus