Replace all occurrences of WITH_RUNTIME with WITH_STDLIB

We are going to deprecate `WITH_RUNTIME` directive. The main reason
behind this change is that `WITH_STDLIB` directive better describes
its meaning, specifically it will add kotlin stdlib to test's classpath.

compiler/testData/codegen/box/builtinStubMethods/mapGetOrDefault/noTypeSafeBridge.kt

@@ -1,7 +1,7 @@
 // SKIP_JDK6
 // TARGET_BACKEND: JVM
 // FULL_JDK
-// WITH_RUNTIME
+// WITH_STDLIB
 
 class A : MutableMap<Any, Any?> {
     override val entries: MutableSet<MutableMap.MutableEntry<Any, Any?>>

compiler/testData/codegen/box/builtinStubMethods/mapGetOrDefault/typeSafeBridge.kt

@@ -1,7 +1,7 @@
 // SKIP_JDK6
 // TARGET_BACKEND: JVM
 // FULL_JDK
-// WITH_RUNTIME
+// WITH_STDLIB
 
 class A : MutableMap<String, String> {
     override val entries: MutableSet<MutableMap.MutableEntry<String, String>>

compiler/testData/codegen/box/builtinStubMethods/mapGetOrDefault/typeSafeBridgeNotNullAny.kt

@@ -1,7 +1,7 @@
 // SKIP_JDK6
 // TARGET_BACKEND: JVM
 // FULL_JDK
-// WITH_RUNTIME
+// WITH_STDLIB
 
 class A : MutableMap<Any, Any> {
     override val entries: MutableSet<MutableMap.MutableEntry<Any, Any>>