Support mapping between Kotlin functions and JVM methods/constructors

compiler/testData/codegen/boxAgainstJava/reflection/mapping/javaMethods.java

@@ -0,0 +1,9 @@
+public class javaMethods {
+    public String f(String s) {
+        return s;
+    }
+
+    public static String g(String s) {
+        return s;
+    }
+}