Add call checker to report error more granulary if possible

This, however, works only for calls of 'synchronized' only. Thus, it
does not support inline functions of any kind.

compiler/backend-common/src/org/jetbrains/kotlin/backend/common/CodegenUtil.kt

@@ -239,11 +239,3 @@ object CodegenUtil {
         )
     }
 }
-
-fun DeclarationDescriptor.isTopLevelInPackage(name: String, packageName: String): Boolean {
-    if (name != this.name.asString()) return false
-
-    val containingDeclaration = containingDeclaration as? PackageFragmentDescriptor ?: return false
-    val packageFqName = containingDeclaration.fqName.asString()
-    return packageName == packageFqName
-}

compiler/backend-common/src/org/jetbrains/kotlin/backend/common/commonCoroutineCodegenUtil.kt

@@ -9,6 +9,7 @@ import org.jetbrains.kotlin.config.LanguageFeature
 import org.jetbrains.kotlin.config.LanguageVersionSettings
 import org.jetbrains.kotlin.config.coroutinesIntrinsicsPackageFqName
 import org.jetbrains.kotlin.descriptors.FunctionDescriptor
+import org.jetbrains.kotlin.descriptors.isTopLevelInPackage
 import org.jetbrains.kotlin.name.Name
 
 val COROUTINE_SUSPENDED_NAME = Name.identifier("COROUTINE_SUSPENDED")