[1.2.X] Fixed #14764 -- specified that a set is returned by User.get_…

…..._permissions methods. Thanks MostAwesomeDude for the report.

Backport of r14787 from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.2.X@14788 bcc190cf-cafb-0310-a4f2-bffc1f526a37

docs/topics/auth.txt

@@ -212,7 +212,7 @@ Methods
 
     .. method:: models.User.get_group_permissions(obj=None)
 
-        Returns a list of permission strings that the user has, through his/her
+        Returns a set of permission strings that the user has, through his/her
         groups.
 
         .. versionadded:: 1.2
@@ -222,7 +222,7 @@ Methods
 
     .. method:: models.User.get_all_permissions(obj=None)
 
-        Returns a list of permission strings that the user has, both through
+        Returns a set of permission strings that the user has, both through
         group and user permissions.
 
         .. versionadded:: 1.2