[django/django] bdec84: [1.7.x] Fixed #22359 -- Changing M2M field to blan...

[GitHub]

Branch: refs/heads/stable/1.7.x
Home: https://github.com/django/django
Commit: bdec84806365209bf800e9213a1cbb9b5dc2aa29
https://github.com/django/django/commit/bdec84806365209bf800e9213a1cbb9b5dc2aa29
Author: Loic Bistuer <loic.b...@gmail.com>
Date: 2014-03-31 (Mon, 31 Mar 2014)

Changed paths:
M django/db/backends/sqlite3/schema.py
M tests/migrations/test_operations.py

Log Message:
-----------
[1.7.x] Fixed #22359 -- Changing M2M field to blank=True failed on sqlite.

Backport of a449e7feec from master