8034223: Most-specific should not have any special treatment for boxed vs. unboxed types
Summary: Rewrite most-specific logic to conform to JLS 8 15.12.2.5
Reviewed-by: vromero
1 MostSpecific01.java:23:9: compiler.err.ref.ambiguous: m, kindname.method, m(Test.IntMapper,java.lang.String), Test, kindname.method, m(Test.LongMapper,java.lang.Integer), Test