Improve implementation of callable reference superclasses

Previously to use reflection on them, you had to wrap an already created object
with a "Reflection.function" or "Reflection.propertyN" call, which the JVM
back-end was doing. This was not optimal in several senses and current solution
fixes that

compiler/testData/codegen/boxWithStdlib/reflection/methodsFromAny/callableReferencesEqualToCallablesFromAPI.kt

@@ -0,0 +1,20 @@
+import kotlin.reflect.*
+import kotlin.test.assertEquals
+
+class A {
+    fun foo() = "foo"
+    val bar = "bar"
+}
+
+fun checkEqual(x: Any, y: Any) {
+    assertEquals(x, y)
+    assertEquals(y, x)
+    assertEquals(x.hashCode(), y.hashCode())
+}
+
+fun box(): String {
+    checkEqual(A::foo, A::class.members.single { it.name == "foo" })
+    checkEqual(A::bar, A::class.members.single { it.name == "bar" })
+
+    return "OK"
+}

compiler/tests/org/jetbrains/kotlin/codegen/generated/BlackBoxWithStdlibCodegenTestGenerated.java

@@ -3912,6 +3912,12 @@ public class BlackBoxWithStdlibCodegenTestGenerated extends AbstractBlackBoxCode
                 KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("compiler/testData/codegen/boxWithStdlib/reflection/methodsFromAny"), Pattern.compile("^(.+)\\.kt$"), true);
             }
 
+            @TestMetadata("callableReferencesEqualToCallablesFromAPI.kt")
+            public void testCallableReferencesEqualToCallablesFromAPI() throws Exception {
+                String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/boxWithStdlib/reflection/methodsFromAny/callableReferencesEqualToCallablesFromAPI.kt");
+                doTestWithStdlib(fileName);
+            }
+
             @TestMetadata("classToString.kt")
             public void testClassToString() throws Exception {
                 String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/boxWithStdlib/reflection/methodsFromAny/classToString.kt");