Restore referential equality for AnnotatedClassDescriptor and AnnotatedConstructorDescriptor.

libraries/tools/kotlin-annotation-processing/src/main/kotlin/org/jetbrains/kotlin/annotation/AnnotationProcessorWrapper.kt

@@ -34,13 +34,18 @@ public class AnnotationProcessorStub : AbstractProcessor() {
 
 abstract class AnnotatedElementDescriptor(public val classFqName: String)
 
-class AnnotatedClassDescriptor(classFqName: String) : AnnotatedElementDescriptor(classFqName)
+class AnnotatedClassDescriptor(classFqName: String) : AnnotatedElementDescriptor(classFqName) {
+    // use referential equality
+}
+
 class AnnotatedMethodDescriptor(classFqName: String, public val methodName: String) : AnnotatedElementDescriptor(classFqName) {
     override fun equals(other: Any?) = other is AnnotatedMethodDescriptor && methodName == other.methodName
 
     override fun hashCode() = methodName.hashCode()
 }
-class AnnotatedConstructorDescriptor(classFqName: String) : AnnotatedElementDescriptor(classFqName)
+class AnnotatedConstructorDescriptor(classFqName: String) : AnnotatedElementDescriptor(classFqName) {
+    // use referential equality
+}
 
 class AnnotatedFieldDescriptor(classFqName: String, public val fieldName: String) : AnnotatedElementDescriptor(classFqName) {
     override fun equals(other: Any?) = other is AnnotatedFieldDescriptor && fieldName == other.fieldName