8178152: Handling of incubating modules, the jdk.unsupported module and --add-exports with --release <current> Summary: --release 9 should only allow documented modules; --add-exports/--add-reads/--patch-module should not be allowed on system modules when --release 9 is used. Reviewed-by: jjg, erikj, ihse

Simple Nashorn examples that can be run with "jjs" tool.