Rename and implement KProperty.accessible -> KCallable.isAccessible

compiler/testData/codegen/boxWithStdlib/reflection/call/cannotCallEnumConstructor.kt

@@ -0,0 +1,15 @@
+import kotlin.reflect.jvm.*
+
+enum class E
+
+fun box(): String {
+    try {
+        val c = E::class.constructors.single()
+        c.isAccessible = true
+        c.call()
+        return "Fail: constructing an enum class should not be allowed"
+    }
+    catch (e: Throwable) {
+        return "OK"
+    }
+}

compiler/testData/codegen/boxWithStdlib/reflection/call/privateProperty.kt

@@ -8,7 +8,7 @@ fun box(): String {
     val a = A("abc")
 
     val p = A::class.declaredMemberProperties.single() as KMutableProperty1<A, String>
-    p.accessible = true
+    p.isAccessible = true
     assertEquals("abc", p.call(a))
     assertEquals(Unit, p.setter.call(a, "def"))
     assertEquals("def", p.getter.call(a))