[django/django] dcdc57: Fixed #20874 -- bump_prefix() in nested subqueries

[GitHub]

Branch: refs/heads/master
Home: https://github.com/django/django
Commit: dcdc579d162b750ee3449e34efd772703592faca
https://github.com/django/django/commit/dcdc579d162b750ee3449e34efd772703592faca
Author: Anssi Kääriäinen <akaa...@gmail.com>
Date: 2013-08-13 (Tue, 13 Aug 2013)

Changed paths:
M django/db/models/sql/compiler.py
M django/db/models/sql/query.py
M tests/foreign_object/tests.py
M tests/queries/tests.py

Log Message:
-----------
Fixed #20874 -- bump_prefix() in nested subqueries

Also made some cleanup to build_filter() code by introducing submethods
solve_lookup_type() and prepare_lookup_value().