test rename overhaul: step 3 _tests.dart => _test.dart

samples/belay/tests/bcap_test.dart

 // 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.
 
 #library('bcap_tests');
 
 #import('dart:html');
 #import('../../../lib/unittest/unittest.dart');
 #import('../../../lib/json/json.dart');
 #import('../bcap/bcap.dart');
@@ skipping 259 matching lines @@
     tunnel.registerWindow(child1, uuidChild1);
 
     server.setResolver(BcapServerInterface _(instID) {
       if (instID === uuid) { return server; }
       else { return tunnel.getSendInterface(instID); }
     });
   }
   */
 }