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/boxInline/suspend/inlineSuspendContinuation.kt

@@ -1,4 +1,5 @@
 // FILE: test.kt
+// COMMON_COROUTINES_TEST
 // WITH_RUNTIME
 // NO_CHECK_LAMBDA_INLINING
 
@@ -33,10 +34,11 @@ suspend inline fun test5(crossinline c: suspend() -> Unit) {
 }
 
 // FILE: box.kt
+// COMMON_COROUTINES_TEST
 
-import kotlin.coroutines.experimental.*
-import kotlin.coroutines.experimental.intrinsics.*
-import kotlin.coroutines.experimental.jvm.internal.*
+import COROUTINES_PACKAGE.*
+import COROUTINES_PACKAGE.intrinsics.*
+import COROUTINES_PACKAGE.jvm.internal.*
 
 object EmptyContinuation: Continuation<Unit> {
     override val context: CoroutineContext