jlink should throw error if target image and current JDK versions don't match

This issue tracks examining whether it makes sense to support running jlink on JDK N to create a run-time image with the system modules from JDK N-1 or JDK N+1. Specifically, the system-modules, generate-jli-classes, and some other plugins are deeply tied to java.base. As things stand, the generate-jli-classes plugin does a version check, the system-modules plugin does not.