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
1 T6230128.java:11:10: compiler.err.override.weaker.access: (compiler.misc.cant.override: foo(java.lang.Object...), A1a, foo(java.lang.Object[]), A1), public