8148379: jdk.nashorn.api.scripting spec. adjustments, clarifications
Reviewed-by: hannesw, mhaupt

8049422: Remove @jdk.Exported
Reviewed-by: dfuchs, mchung, darcy, chegar

8130888: Typos in nashorn sources
Reviewed-by: hannesw, mhaupt
Contributed-by: asashour@yahoo.com

8074661: Forward port AbstractJSObject.getDefaultValue(JSObject, Class)
Reviewed-by: hannesw, sundar

8074972: Unused imports, a missing javadoc and a build warning
Reviewed-by: hannesw, lagergren

8068431: @since and @jdk.Exported are missing in jdk.nashorn.api.scripting classes and package-info.java files
Reviewed-by: attila, lagergren

8054834: Modular Source Code
Reviewed-by: alanb, chegar, ihse, mduigou
Contributed-by: alan.bateman@oracle.com, alex.buckley@oracle.com, chris.hegarty@oracle.com, erik.joelsson@oracle.com, jonathan.gibbons@oracle.com, karen.kinnear@oracle.com, magnus.ihse.bursie@oracle.com, mandy.chung@oracle.com, mark.reinhold@oracle.com, paul.sandoz@oracle.com