8008405: Now that metafactory is in place, add javac lambda serialization tests
Summary: Tests part of original langtools serialization review.
Reviewed-by: mcimadamore
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