Reapply "Update the test runner to use the new dart:io API"

tools/release/version.dart

-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2013, 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.
 
 /**
  * This file contains functionality for getting dart version numbers using
  * our standard version construction method. Systems that does not include this
  * file should emulate the structure for revision numbers that we have here.
  *
  * The version number of a dart build is constructed as follows:
  *   1. The major, minor, build and patch numbers are extracted from the VERSION
@@ skipping 43 matching lines @@
       if (!wasCompletedWithError) {
         c.completeError(msg);
         wasCompletedWithError = true;
       }
     }
     f.exists().then((existed) {
       if (!existed) {
         completeError("No VERSION file");
         return;
       }
-      StringInputStream input = new StringInputStream(f.openInputStream());
-      input.onLine = () {
-        var line = input.readLine().trim();
+      Stream<String> stream =
+          f.openRead().transform(new StringDecoder())
+                      .transform(new LineTransformer());
+      stream.listen((String line) {
         if (line == null) {
           completeError(
               "VERSION input file seems to be in the wrong format");
           return;
         }
         var values = line.split(" ");
         if (values.length != 2) {
           completeError(
               "VERSION input file seems to be in the wrong format");
           return;
@@ skipping 16 matching lines @@
             BUILD = number;
             break;
           case "PATCH":
             PATCH = number;
             break;
           default:
             completeError("Wrong format in VERSION file, line does not "
                             "contain one of {MAJOR, MINOR, BUILD, PATCH}");
             return;
         }
-      };
-      input.onClosed = () {
+      },
+      onDone: () {
         // Only complete if we did not already complete with a failure.
         if (!wasCompletedWithError) {
           getRevision().then((revision) {
             REVISION = revision;
             USERNAME = getUserName();
             var userNameString = "";
             if (USERNAME != '') userNameString = "_$USERNAME";
             var revisionString = "";
             if (revision != 0) revisionString = "_r$revision";
             c.complete(
                 "$MAJOR.$MINOR.$BUILD.$PATCH$revisionString$userNameString");
             return;
           });
         }
-      };
+      });
     });
     return c.future;
   }
 
   String getExecutableSuffix() {
     if (Platform.operatingSystem == 'windows') {
       return '.bat';
     }
     return '';
   }
@@ skipping 85 matching lines @@
   static RepositoryType guessType() {
     if (new Directory(".svn").existsSync()) return RepositoryType.SVN;
     if (new Directory(".git").existsSync()) return RepositoryType.GIT;
     return RepositoryType.UNKNOWN;
   }
 
   String toString() => name;
 
   final String name;
 }