possible fix to issues 1682, REST and DELETE

VERSION

@@ -1 +1 @@
-Version 2.6.3-stable+timestamp.2013.09.19.18.25.38
+Version 2.6.3-stable+timestamp.2013.09.19.18.31.43

gluon/globals.py

@@ -332,7 +332,7 @@ class Request(Storage):
                 if not rest_action:
                     raise HTTP(400, "method not supported")
                 try:
-                    return rest_action(*_self.args, **_self.vars)
+                    return rest_action(*_self.args, **getattr(_self,'vars',{}))
                 except TypeError, e:
                     exc_type, exc_value, exc_traceback = sys.exc_info()
                     if len(traceback.extract_tb(exc_traceback)) == 1: