Kapt3: Write stub class files with metadata (needed for incremental compilation)

compiler/testData/codegen/light-analysis/annotations/defaultParameterValues.txt

@@ -1,9 +1,11 @@
+@kotlin.Metadata
 public final class A {
     public method <init>(): void
 }
 
 @kotlin.annotation.Retention
 @java.lang.annotation.Retention
+@kotlin.Metadata
 public annotation class Ann {
     public abstract method a(): Ann2
     public abstract method c(): java.lang.Class
@@ -15,17 +17,21 @@ public annotation class Ann {
 }
 
 @java.lang.annotation.Retention
+@kotlin.Metadata
 public annotation class Ann2
 
+@kotlin.Metadata
 public final class DefaultParameterValuesKt {
     public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
 }
 
 @Ann
+@kotlin.Metadata
 public final class MyClass {
     public method <init>(): void
 }
 
+@kotlin.Metadata
 public enum class MyEnum {
     public final static field A: MyEnum
     protected method <init>(p0: java.lang.String, p1: int): void