Use explicit public visibility in kotlin-runtime.

core/builtins/src/kotlin/Coroutines.kt

@@ -19,17 +19,17 @@ package kotlin.coroutines
 /**
  * Interface representing a continuation after a suspension point that returns value of type `P`
  */
-interface Continuation<in P> {
+public interface Continuation<in P> {
     /**
      * Resumes the execution of the corresponding coroutine passing `data` as the return value of the last suspension point
      */
-    fun resume(data: P)
+    public fun resume(data: P)
 
     /**
      * Resumes the execution of the corresponding coroutine so that the `exception` is re-thrown right after the
      * last suspension point
      */
-    fun resumeWithException(exception: Throwable)
+    public fun resumeWithException(exception: Throwable)
 }
 
 
@@ -38,4 +38,4 @@ interface Continuation<in P> {
  */
 @Target(AnnotationTarget.CLASS)
 @Retention(AnnotationRetention.BINARY)
-annotation class AllowSuspendExtensions
+public annotation class AllowSuspendExtensions