8161501: JSR269 jigsaw update: javax.lang.model.element.ModuleElement.getEnclosedElements() on unnamed module with unnamed package Reviewed-by: jjg

^build/
^dist/
^.idea/
nbproject/private/
^webrev
^.hgtip
^.bridge2
^.jib/
.DS_Store
.metadata/
.recommenders/