Extract kotlin.coroutines.experimental API into compat artifact

Add public API dump for kotlin-coroutines-experimental-compat

#KT-36083

libraries/stdlib/jvm/build.gradle

@@ -26,18 +26,18 @@ sourceSets {
     }
     coroutinesExperimental {
         kotlin {
-            srcDir '../coroutines-experimental/jvm/src'
+//            srcDir '../coroutines-experimental/jvm/src'
         }
     }
     coroutinesExperimentalTest {
         kotlin {
-            srcDir '../coroutines-experimental/jvm/test'
+//            srcDir '../coroutines-experimental/jvm/test'
         }
     }
     coroutinesExperimentalMigrationTest {
         kotlin {
             if(!BuildPropertiesKt.getKotlinBuildProperties(project).inIdeaSync) {
-                srcDir '../coroutines-experimental/jvm/test'
+//                srcDir '../coroutines-experimental/jvm/test'
             }
         }
     }
@@ -77,6 +77,7 @@ dependencies {
 
     testCompile project(':kotlin-test:kotlin-test-junit')
     testCompile sourceSets.coroutinesExperimental.output
+    testCompile project(':kotlin-coroutines-experimental-compat')
 
     coroutinesExperimentalCompile sourceSets.main.output
     coroutinesExperimentalTestCompile sourceSets.test.output

libraries/stdlib/jvm/test/coroutines/CoroutinesTest.kt

@@ -1,15 +1,12 @@
 /*
- * Copyright 2010-2018 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
  * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
  */
 
-@file:Suppress("ObsoleteExperimentalCoroutines")
-
 package test.coroutines
 
 import java.util.concurrent.Semaphore
 import kotlin.coroutines.*
-import kotlin.coroutines.experimental.startCoroutine
 import kotlin.test.*
 
 /**