Update oauth2client to v2.0.1 and googleapiclient to v1.5.0.

client/third_party/oauth2client/clientsecrets.py

 # Copyright 2014 Google Inc. All rights reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
 #      http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
@@ skipping 103 matching lines @@
 
 def loads(s):
     obj = json.loads(s)
     return _validate_clientsecrets(obj)
 
 
 def _loadfile(filename):
     try:
         with open(filename, 'r') as fp:
             obj = json.load(fp)
-    except IOError:
-        raise InvalidClientSecretsError('File not found: "%s"' % filename)
+    except IOError as exc:
+        raise InvalidClientSecretsError('Error opening file', exc.filename,
+                                        exc.strerror, exc.errno)
     return _validate_clientsecrets(obj)
 
 
 def loadfile(filename, cache=None):
     """Loading of client_secrets JSON file, optionally backed by a cache.
 
     Typical cache storage would be App Engine memcache service,
     but you can pass in any other cache client that implements
     these methods:
 
@@ skipping 28 matching lines @@
     if not cache:
         return _loadfile(filename)
 
     obj = cache.get(filename, namespace=_SECRET_NAMESPACE)
     if obj is None:
         client_type, client_info = _loadfile(filename)
         obj = {client_type: client_info}
         cache.set(filename, obj, namespace=_SECRET_NAMESPACE)
 
     return next(six.iteritems(obj))