fix Library*NegativeTests (and a couple Prefix ones by accident)

frog/world.dart

-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 /** The one true [World]. */
 World world;
 
 /**
  * Experimental phase to enable await, only set when using the
  * await/awaitc.dart entrypoint.
  */
@@ skipping 411 matching lines @@
     if (script == null) script = options.dartScript;
     Library library = getOrAddLibrary(script);
     process();
     return library;
   }
 
   resolveAll() {
     for (var lib in libraries.getValues()) {
       lib.resolve();
     }
+    for (var lib in libraries.getValues()) {
+      lib.postResolveChecks();
+    }
   }
 
   findMainMethod(Library lib) {
     var mainMembers = lib.topType.resolveMember('main');
     var main = null;
     if (mainMembers == null || mainMembers.members.length == 0) {
       fatal('no main method specified');
     } else if (mainMembers.members.length > 1) {
       for (var m in mainMembers.members) {
         main = m;
@@ skipping 125 matching lines @@
 
   withTiming(String name, f()) {
     final sw = new Stopwatch();
     sw.start();
     var result = f();
     sw.stop();
     info('$name in ${sw.elapsedInMs()}msec');
     return result;
   }
 }