Add @UnderMigration annotation and options for report level

libraries/tools/kotlin-annotations-jvm/build.gradle

@@ -0,0 +1,36 @@
+description = 'Kotlin annotations for JVM'
+
+apply plugin: 'kotlin'
+
+configureJvm6Project(project)
+configurePublishing(project)
+
+sourceSets {
+    main {
+        kotlin {
+            srcDir 'src'
+        }
+    }
+}
+
+artifacts {
+    archives sourcesJar
+    archives javadocJar
+}
+
+dist {
+    from (jar, sourcesJar)
+}
+
+tasks.withType(org.jetbrains.kotlin.gradle.tasks.KotlinCompile) {
+    kotlinOptions.jdkHome = JDK_16
+    kotlinOptions.jvmTarget = 1.6
+}
+
+compileKotlin {
+    kotlinOptions.freeCompilerArgs = [
+            "-Xallow-kotlin-package",
+            "-module-name", project.name
+    ]
+}
+

libraries/tools/kotlin-annotations-jvm/src/kotlin/annotations/jvm/Annotations.kt

@@ -0,0 +1,34 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package kotlin.annotations.jvm
+
+/**
+ * Contains the list of possible migration statuses.
+ */
+public enum class MigrationStatus {
+    IGNORE,
+    WARN,
+    @Deprecated("experimental feature")
+    STRICT
+}
+
+/**
+ * This meta-annotation is intended for user nullability annotations with JSR-305 type qualifiers. Behaviour of meta-annotated
+ * nullability annotations can be controlled via compilation flag.
+ */
+@Target(AnnotationTarget.ANNOTATION_CLASS)
+public annotation class UnderMigration(val status: MigrationStatus)