Fixed keywords after 'this@' completion + fixed implementation of JetExpressionWithLabel.getLabelName()

core/descriptors/src/org/jetbrains/kotlin/name/FqNamesUtil.kt

@@ -16,6 +16,8 @@
 
 package org.jetbrains.kotlin.name
 
+import org.jetbrains.kotlin.renderer.DescriptorRenderer
+
 public fun FqName.isSubpackageOf(packageName: FqName): Boolean {
     return when {
         this == packageName -> true
@@ -76,3 +78,5 @@ public fun isValidJavaFqName(qualifiedName: String?): Boolean {
 
     return state != State.AFTER_DOT
 }
+
+public fun Name.renderName(): String = DescriptorRenderer.COMPACT.renderName(this)