java Retention + Repeatable = kotlin.annotation.annotation (but java Repeatable is still intact), a few tests

compiler/testData/diagnostics/testsWithJava8/annotations/javaRepeatable.kt

@@ -0,0 +1,19 @@
+// FILE: RepeatableAnnotation.java
+
+import java.lang.annotation.Repeatable
+
+@Repeatable(RepeatableAnnotations.class)
+public @interface RepeatableAnnotation {
+
+}
+
+// FILE: RepeatableAnnotations.java
+
+public @interface RepeatableAnnotations {
+     RepeatableAnnotation[] value();
+}
+
+// FILE: RepeatableUse.kt
+
+RepeatableAnnotation RepeatableAnnotation class My
+