[GREENFOOT-827] Fix issue about JavaFX requirement for export to JAR
Greenfoot requires JavaFX, including for the case when it has been exported to a standalone JAR. In Oracle Java 8 this was fine because JavaFX was included in the JDK so running the JAR would work fine on Oracle's Java 8. However with OpenJDK 11, JavaFX is supplied separately and installed separately, so the Greenfoot JAR won't be runnable without also supplying the path for OpenJFX 11. We need to either bundle OpenJFX into the JAR itself (with issues about OS-specific libraries or not) or have an accompanying script/batch file which somehow locates the JAR and adds it to the class path. A more advanced alternative is to export using the Java Packager so that it is an everything-included installer for the scenario.
- Issue type: Bug
- Priority: Medium
- Fix versions: 3.6.0