Flows no longer need to be saved between uses.

Also introduces util.positional declarations.

Reviewed in http://codereview.appspot.com/6441056/.

Fixes issue #136.
diff --git a/samples/blogger/blogger.py b/samples/blogger/blogger.py
index da67afe..8e3ccdd 100644
--- a/samples/blogger/blogger.py
+++ b/samples/blogger/blogger.py
@@ -113,7 +113,7 @@
       users = service.users()
 
       # Retrieve this user's profile information
-      thisuser = users.get(userId="self").execute(http)
+      thisuser = users.get(userId="self").execute(http=http)
       print "This user's display name is: %s" % thisuser['displayName']
 
       # Retrieve the list of Blogs this user has write privileges on
@@ -128,7 +128,7 @@
         print "The posts for %s:" % blog['name']
         request = posts.list(blogId=blog['id'])
         while request != None:
-          posts_doc = request.execute(http)
+          posts_doc = request.execute(http=http)
           if 'items' in posts_doc and not (posts_doc['items'] is None):
             for post in posts_doc['items']:
               print "  %s (%s)" % (post['title'], post['url'])