Minor: improve message from future for use and useLines

Annotate RequireKotlin and apiVersionIsAtLeast with SinceKotlin

libraries/stdlib/src/kotlin/internal/Annotations.kt

@@ -95,6 +95,7 @@ internal annotation class AccessibleLateinitPropertyLiteral
  */
 @Target(AnnotationTarget.CLASS, AnnotationTarget.FUNCTION, AnnotationTarget.PROPERTY, AnnotationTarget.CONSTRUCTOR, AnnotationTarget.TYPEALIAS)
 @Retention(AnnotationRetention.SOURCE)
+@SinceKotlin("1.2")
 internal annotation class RequireKotlin(
         val version: String,
         val message: String = "",
@@ -106,6 +107,7 @@ internal annotation class RequireKotlin(
 /**
  * The kind of the version that is required by [RequireKotlin].
  */
+@SinceKotlin("1.2")
 internal enum class RequireKotlinVersionKind {
     LANGUAGE_VERSION,
     COMPILER_VERSION,

libraries/stdlib/src/kotlin/internal/PlatformImplementations.kt

@@ -72,6 +72,6 @@ private fun getJavaVersion(): Int {
  * The function usages are validated to have literal argument values.
  */
 @PublishedApi
-@RequireKotlin("1.2", versionKind = RequireKotlinVersionKind.COMPILER_VERSION)
+@SinceKotlin("1.2")
 internal fun apiVersionIsAtLeast(major: Int, minor: Int, patch: Int) =
         KotlinVersion.CURRENT.isAtLeast(major, minor, patch)

libraries/stdlib/src/kotlin/io/Closeable.kt

@@ -29,7 +29,7 @@ import kotlin.internal.*
  * @return the result of [block] function invoked on this resource.
  */
 @InlineOnly
-@RequireKotlin("1.2", versionKind = RequireKotlinVersionKind.COMPILER_VERSION)
+@RequireKotlin("1.2", versionKind = RequireKotlinVersionKind.COMPILER_VERSION, message = "Requires newer compiler version to be inlined correctly.")
 public inline fun <T : Closeable?, R> T.use(block: (T) -> R): R {
     var exception: Throwable? = null
     try {

libraries/stdlib/src/kotlin/io/FileReadWrite.kt

@@ -196,6 +196,6 @@ public fun File.readLines(charset: Charset = Charsets.UTF_8): List<String> {
  * @param charset character set to use. By default uses UTF-8 charset.
  * @return the value returned by [block].
  */
-@RequireKotlin("1.2", versionKind = RequireKotlinVersionKind.COMPILER_VERSION)
+@RequireKotlin("1.2", versionKind = RequireKotlinVersionKind.COMPILER_VERSION, message = "Requires newer compiler version to be inlined correctly.")
 public inline fun <T> File.useLines(charset: Charset = Charsets.UTF_8, block: (Sequence<String>) -> T): T =
         bufferedReader(charset).use { block(it.lineSequence()) }

libraries/stdlib/src/kotlin/io/ReadWrite.kt

@@ -43,7 +43,7 @@ public fun Reader.readLines(): List<String> {
  * the processing is complete.
  * @return the value returned by [block].
  */
-@RequireKotlin("1.2", versionKind = RequireKotlinVersionKind.COMPILER_VERSION)
+@RequireKotlin("1.2", versionKind = RequireKotlinVersionKind.COMPILER_VERSION, message = "Requires newer compiler version to be inlined correctly.")
 public inline fun <T> Reader.useLines(block: (Sequence<String>) -> T): T =
         buffered().use { block(it.lineSequence()) }