Extend the mDNS package with a native extension used on Mac OS

src/pkg/mdns/upload_dylib.sh

Index: src/pkg/mdns/upload_dylib.sh
diff --git a/src/pkg/mdns/upload_dylib.sh b/src/pkg/mdns/upload_dylib.sh
new file mode 100755
index 0000000000000000000000000000000000000000..a5d1ae5c52c41773cc94ff96b2184950e6396e8f
--- /dev/null
+++ b/src/pkg/mdns/upload_dylib.sh
@@ -0,0 +1,14 @@
+# Copyright (c) 2015, the Fletch 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.md file.
+
+# You need to be logged in using gsutil.py to get the correct credentials to
+# upload
+#
+#  $ gsutil.py config
+#
+# Using 'gsutil config' (without .py) or 'gclient auth login' probably won't
+# work.
+
+upload_to_google_storage.py -b dart-dependencies-fletch \
+    pkg/mdns/lib/native/libmdns_extension_lib.dylib