8012242: Lambda compatibility and checked exceptions
Summary: Inference variables in 'throws' clause with no constraints should be inferred as RuntimeException
Reviewed-by: jjg, vromero

7015430: Incorrect thrown type determined for unchecked invocations
Summary: Thrown types do not get updated after 15.12.2.8, and do not get erased as per 15.12.2.6
Reviewed-by: jjg, dlsmith