Relocate @JvmDefault to stdlib module

libraries/stdlib/src/kotlin/jvm/JvmDefault.kt

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the license/LICENSE.txt file.
+ */
+@file:JvmVersion
+
+package kotlin.jvm
+
+import kotlin.internal.RequireKotlin
+import kotlin.internal.RequireKotlinVersionKind
+
+/**
+ * Specifies that a JVM default method should be generated for non-abstract Kotlin interface member.
+ * This annotation requires explicit compilation flag to be enabled: `-Xenable-jvm-default`.
+ * Adding annotation is binary incompatible change.
+ */
+@SinceKotlin("1.2")
+@RequireKotlin("1.2.40", versionKind = RequireKotlinVersionKind.COMPILER_VERSION)
+@Target(AnnotationTarget.FUNCTION, AnnotationTarget.PROPERTY)
+annotation class JvmDefault