8044638: Tidy up Nashorn codebase for code standardsReviewed-by: lagergren, sundar
8026167: Class cache/reuse of 'eval' scripts results in ClassCastException in some cases.Reviewed-by: lagergren, jlaskey
8019553: NPE on illegal l-value for increment and decrementReviewed-by: jlaskey, attila, lagergren