Implement correct is check for SuspendFunction

Let callable references implement SuspendFunction
Do not generate CHECKCAST SuspendFunction when LV is 1.2

 #KT-25825: Fixed

compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/AsmTypes.java

@@ -1,17 +1,6 @@
 /*
- * Copyright 2010-2015 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the license/LICENSE.txt file.
  */
 
 package org.jetbrains.kotlin.resolve.jvm;
@@ -74,6 +63,8 @@ public class AsmTypes {
     public static final Type K_MUTABLE_PROPERTY1_TYPE = reflect("KMutableProperty1");
     public static final Type K_MUTABLE_PROPERTY2_TYPE = reflect("KMutableProperty2");
 
+    public static final Type SUSPEND_FUNCTION_TYPE = Type.getObjectType("kotlin/coroutines/jvm/internal/SuspendFunction");
+
     public static final String REFLECTION = "kotlin/jvm/internal/Reflection";
 
     public static final String REF_TYPE_PREFIX = "kotlin/jvm/internal/Ref$";