Add stdlib to gradle scripts classpath, since it is not included into compiler anymore

idea/idea-gradle/src/org/jetbrains/kotlin/idea/core/script/GradleScriptTemplateProvider.kt

@@ -98,7 +98,7 @@ abstract class AbstractGradleKotlinDSLTemplateProvider(project: Project, private
     // TODO_R: check this against kotlin-dsl branch that uses daemon
     override val additionalResolverClasspath: List<File> get() =
     // additionally need compiler jar to load gradle resolver
-        gradleLibDir.listFiles { file -> file.name.startsWith("kotlin-compiler-embeddable") }
+        gradleLibDir.listFiles { file -> file.name.startsWith("kotlin-compiler-embeddable") || file.name.startsWith("kotlin-stdlib") }
                 .firstOrNull()?.let(::listOf).orEmpty()
 }