Fix server mode

lib/src/codegen/html_codegen.dart

 // Copyright (c) 2015, 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.
 
 library dev_compiler.src.codegen.html_codegen;
 
 import 'package:html/dom.dart';
 import 'package:html/parser.dart' show parseFragment;
 import 'package:logging/logging.dart' show Logger;
 import 'package:path/path.dart' as path;
@@ skipping 62 matching lines @@
     }
     if (ext == '.js') {
       fragment.nodes.add(libraryInclude(resourcePath));
     } else if (ext == '.css') {
       var stylesheetLink = '<link rel="stylesheet" href="$resourcePath">\n';
       fragment.nodes.add(parseFragment(stylesheetLink));
     }
   }
 
   String mainLibraryName;
+  var src = scripts[0].attributes["src"];
+  var scriptUri = root.source.resolveRelativeUri(Uri.parse(src));
+
   for (var lib in libraries) {
     var info = lib.info;
     if (info == null) continue;
     var uri = info.library.source.uri;
     var jsPath = compiler.getModulePath(uri);
-    if (info.isEntry) mainLibraryName = compiler.getModuleName(uri);
+    if (uri == scriptUri) mainLibraryName = compiler.getModuleName(uri);
     if (lib.cachingHash != null) {
       jsPath = _addHash(jsPath, lib.cachingHash);
     }
     fragment.nodes.add(libraryInclude(jsPath));
   }
   fragment.nodes.add(invokeMain(mainLibraryName));
   scripts[0].replaceWith(fragment);
   return '${document.outerHtml}\n';
 }
 
@@ skipping 17 matching lines @@
 
 /// Convert the outputPath to include the hash in it. This function is the
 /// reverse of what the server does to determine whether a request needs to have
 /// cache headers added to it.
 _addHash(String outPath, String hash) {
   // (the ____ prefix makes it look better in the web inspector)
   return '$outPath?____cached=$hash';
 }
 
 final _log = new Logger('dev_compiler.src.codegen.html_codegen');