8011044: Remove support for 1.5 and earlier source and target options
Reviewed-by: darcy, jjg
Contributed-by: neil.toda@oracle.com, brian.goetz@oracle.com

8005222: Fixed bugs should have tests with bugid in @bug tag
Reviewed-by: jfranck, jjg
Contributed-by: Andreas Lundblad <andreas.lundblad@oracle.com>

7192246: Add type-checking support for default methods
Summary: Add type-checking support for default methods as per Featherweight-Defender document
Reviewed-by: jjg, dlsmith