Internal Kotlin packages now should be completable in parent packages

Internal packages which are hard-excluded from completion and
 imports now should be visible there if file package are parent of
 excluded one
 e.g kotlin.jvm.internal.* now visible from kotlin and kotlin.jvm
 #KT-16214 fixed

idea/idea-completion/testData/basic/java/CompletionForExcludedWhenInternalUse.kt

@@ -0,0 +1,7 @@
+package kotlin
+
+fun some() {
+    kotlin.jvm.<caret>
+}
+
+// EXIST: internal