Fixing layout in js output (use full paths rather than just the library name)

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 ddc.src.codegen.html_codegen;
 
 import 'dart:io';
 
 import 'package:html5lib/dom.dart';
 import 'package:html5lib/parser.dart' show parseFragment;
@@ skipping 25 matching lines @@
   if (options.outputDart) {
     new File(outputFile).writeAsStringSync('${document.outerHtml}\n');
     return;
   }
 
   String mainLibraryName;
   var pathToDdc = path.dirname(path
       .dirname(path.relative(Platform.script.path, from: options.outputDir)));
   var fragment = _loadRuntimeScripts(path.join(pathToDdc, 'lib'));
   if (!options.checkSdk) fragment.nodes.add(_miniMockSdk);
+  var root = new Uri.file(path.absolute(inputFile));
   for (var lib in results.libraries) {
     if (lib.isEntry) mainLibraryName = jsLibraryName(lib.library);
-    fragment.nodes.add(_libraryInclude(jsOutputPath(lib)));
+    fragment.nodes.add(_libraryInclude(jsOutputPath(lib, root)));
   }
   fragment.nodes.add(_invokeMain(mainLibraryName));
   mainScript.replaceWith(fragment);
   new File(outputFile).writeAsStringSync('${document.outerHtml}\n');
 }
 
 /// A document fragment with scripts that check for harmony features and that
 /// inject our runtime.
 Node _loadRuntimeScripts(String ddcLibDir) => parseFragment('''
 <script src="$ddcLibDir/runtime/harmony_feature_check.js"></script>
@@ skipping 11 matching lines @@
 /// A script tag with a tiny mock of the core SDK. This is just used for testing
 /// some small samples.
 // TODO(sigmund,jmesserly): remove.
 Node get _miniMockSdk => parseFragment('''
 <script>
   /* placehorder for unimplemented code libraries */
   var math = Math;
   var core = { int: { parse: Number }, print: e => console.log(e) };
   var dom = { document: document };
 </script>''');