move tip to utils so it can be picked up in the SDK

utils/tip/toss.dart

Index: utils/tip/toss.dart
diff --git a/frog/tip/toss.dart b/utils/tip/toss.dart
similarity index 95%
rename from frog/tip/toss.dart
rename to utils/tip/toss.dart
index f18847444685b4d127fd7bd18052a2e61b96a941..fdf95134bf76755e36d14d3816de251e88f8543c 100644
--- a/frog/tip/toss.dart
+++ b/utils/tip/toss.dart
@@ -2,9 +2,9 @@
 // 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.
 
-#import('../lib/node/node.dart');
-#import('../file_system_node.dart');
-#import('../lang.dart');
+#import('../../frog/lib/node/node.dart');
+#import('../../frog/file_system_node.dart');
+#import('../../frog/lang.dart');
 
 String compileDart(String basename, String filename) {
   final basedir = path.dirname(basename);