Point all links to the 'demos' directory to the stable branch instead…

… of master.

README.rst

@@ -49,7 +49,7 @@ Here is a simple "Hello, world" example web app for Tornado::
 
 This example does not use any of Tornado's asynchronous features; for
 that see this `simple chat room
-<https://github.com/tornadoweb/tornado/tree/master/demos/chat>`_.
+<https://github.com/tornadoweb/tornado/tree/stable/demos/chat>`_.
 
 Installation
 ------------

docs/index.rst

@@ -59,7 +59,7 @@ Here is a simple "Hello, world" example web app for Tornado::
 
 This example does not use any of Tornado's asynchronous features; for
 that see this `simple chat room
-<https://github.com/tornadoweb/tornado/tree/master/demos/chat>`_.
+<https://github.com/tornadoweb/tornado/tree/stable/demos/chat>`_.
 
 Installation
 ------------

docs/overview.rst

@@ -482,7 +482,7 @@ and the user is not logged in, the server will send a ``403`` response.
 
 Tornado comes with built-in support for third-party authentication
 schemes like Google OAuth. See the `tornado.auth`
-for more details. Check out the `Tornado Blog example application <https://github.com/tornadoweb/tornado/tree/master/demos/blog>`_ for a
+for more details. Check out the `Tornado Blog example application <https://github.com/tornadoweb/tornado/tree/stable/demos/blog>`_ for a
 complete example that uses authentication (and stores user data in a
 MySQL database).
 
@@ -904,7 +904,7 @@ and the response is finally flushed to the client with the call to
 
 For a more advanced asynchronous example, take a look at the `chat
 example application
-<https://github.com/tornadoweb/tornado/tree/master/demos/chat>`_, which
+<https://github.com/tornadoweb/tornado/tree/stable/demos/chat>`_, which
 implements an AJAX chat room using `long polling
 <http://en.wikipedia.org/wiki/Push_technology#Long_polling>`_.  Users
 of long polling may want to override ``on_connection_close()`` to
@@ -1137,5 +1137,5 @@ AppEngine <http://code.google.com/appengine/>`_ application:
         wsgiref.handlers.CGIHandler().run(application)
 
 See the `appengine example application
-<https://github.com/tornadoweb/tornado/tree/master/demos/appengine>`_ for a
+<https://github.com/tornadoweb/tornado/tree/stable/demos/appengine>`_ for a
 full-featured AppEngine app built on Tornado.

tornado/wsgi.py

@@ -166,7 +166,7 @@ def get(self):
             server.serve_forever()
 
     See the `appengine demo
-    <https://github.com/tornadoweb/tornado/tree/master/demos/appengine>`_
+    <https://github.com/tornadoweb/tornado/tree/stable/demos/appengine>`_
     for an example of using this module to run a Tornado app on Google
     App Engine.