8078561: Error message should be generated once when -source 6 is specified
Summary: Code to avoid duplicated errors about features not supported in the current source level moved to Log
Reviewed-by: jjg
enum EnumTest --
EnumTest.<init>($enum$name/*synthetic*/, $enum$ordinal/*synthetic*/)
EnumTest.<init>($enum$name/*synthetic*/, $enum$ordinal/*synthetic*/, a, ba)
EnumTest.ok(c, dc)
EnumTest.values()
EnumTest.valueOf(A, BA)
EnumTest.valueOf(name/*implicit*/)