properly create JavaNamespaceDescriptor for java.lang

compiler/frontend.java/src/org/jetbrains/jet/lang/resolve/java/JavaBridgeConfiguration.java

@@ -53,8 +53,10 @@ public class JavaBridgeConfiguration implements Configuration {
     public void addDefaultImports(@NotNull BindingTrace trace, @NotNull WritableScope rootScope, @NotNull Importer importer) {
         rootScope.importScope(new JavaPackageScope("", createNamespaceDescriptor(JavaDescriptorResolver.JAVA_ROOT, ""), javaSemanticServices));
         for (String importFQN : DEFAULT_JAVA_IMPORTS) {
-            importer.addScopeImport(new JavaPackageScope(
-                importFQN, createNamespaceDescriptor(QualifiedNamesUtil.fqnToShortName(importFQN), importFQN), javaSemanticServices));
+            NamespaceDescriptor namespaceDescriptor = javaSemanticServices.getDescriptorResolver().resolveNamespace(importFQN);
+            if (namespaceDescriptor != null) {
+                importer.addScopeImport(namespaceDescriptor.getMemberScope());
+            }
         }
         delegateConfiguration.addDefaultImports(trace, rootScope, importer);
     }

compiler/frontend.java/src/org/jetbrains/jet/lang/resolve/java/JavaDescriptorResolver.java

@@ -687,7 +687,8 @@ public class JavaDescriptorResolver {
         }
     }
 
-    public NamespaceDescriptor resolveNamespace(String qualifiedName) {
+    @Nullable
+    public NamespaceDescriptor resolveNamespace(@NotNull String qualifiedName) {
         // First, let's check that there is no Kotlin package:
         NamespaceDescriptor kotlinNamespaceDescriptor = semanticServices.getKotlinNamespaceDescriptor(qualifiedName);
         if (kotlinNamespaceDescriptor != null) {