jet.Annotation

Create a supertype for all Kotlin annotations, jet.Annotation.
Map java.lang.annotation.Annotation to jet.Annotation and vice versa.
Add extension function "annotationType()" to every annotation, similar to java.lang.annotation.Annotation.annotationType()
 #KT-1620 Fixed

libraries/stdlib/src/kotlin/Annotations.kt

@@ -0,0 +1,9 @@
+package kotlin
+
+import java.lang.reflect.Proxy
+
+public fun <T : Annotation> T.annotationType() : Class<out T> {
+    val invocationHandler = Proxy.getInvocationHandler(this)!!
+    val method = this.javaClass.getMethod("annotationType")
+    return invocationHandler.invoke(this, method, array<Object>())!! as Class<out T>
+}