8029230: Update copyright year to match last edit in jdk8 langtools repository for 2013Reviewed-by: ksriniContributed-by: steve.sides@oracle.com
6537020: JCK tests: a compile-time error should be given in case of ambiguously imported fields (types, methods)Summary: Hiding check does not support interface multiple inheritanceReviewed-by: jjg
6968063: provide examples of code that generate diagnosticsReviewed-by: mcimadamore