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"
+}