Move coroutines to kotlin.coroutines package: tests

Introduce COMMON_COROUTINES_TEST directive.
Every test with this directive is run twice: one time with
language version 1.2 and kotlin.coroutines.experimental package
and the other time with language version 1.3 and kotlin.coroutines
package. Each run is a separate method: with suffixes _1_2 and _1_3
respectively.
However, since codegen of release coroutines is not supported in JS
backend, we generate only one method: with suffix _1_2.
 #KT-23362

compiler/testData/codegen/java8/box/async.kt

@@ -1,9 +1,10 @@
 // WITH_RUNTIME
+// COMMON_COROUTINES_TEST
 // FULL_JDK
 
 import java.util.concurrent.CompletableFuture
-import kotlin.coroutines.experimental.*
-import kotlin.coroutines.experimental.intrinsics.*
+import COROUTINES_PACKAGE.*
+import COROUTINES_PACKAGE.intrinsics.*
 
 fun foo(): CompletableFuture<String> = CompletableFuture.supplyAsync { "foo" }
 fun bar(v: String): CompletableFuture<String> = CompletableFuture.supplyAsync { "bar with $v" }

compiler/testData/codegen/java8/box/asyncException.kt

@@ -1,9 +1,10 @@
 // WITH_RUNTIME
+// COMMON_COROUTINES_TEST
 // FULL_JDK
 
 import java.util.concurrent.CompletableFuture
-import kotlin.coroutines.experimental.*
-import kotlin.coroutines.experimental.intrinsics.*
+import COROUTINES_PACKAGE.*
+import COROUTINES_PACKAGE.intrinsics.*
 
 fun exception(v: String): CompletableFuture<String> = CompletableFuture.supplyAsync { throw RuntimeException(v) }