[django/django] 25f4e7: [1.7.x] Gave unique names to SpatialRefSysModels.

[GitHub]

Branch: refs/heads/stable/1.7.x
Home: https://github.com/django/django
Commit: 25f4e71ed30befbd6af02a7d35807d0d3170e57d
https://github.com/django/django/commit/25f4e71ed30befbd6af02a7d35807d0d3170e57d
Author: Aymeric Augustin <aymeric....@m4x.org>
Date: 2014-06-08 (Sun, 08 Jun 2014)

Changed paths:
M django/contrib/gis/db/backends/base.py
M django/contrib/gis/db/backends/oracle/models.py
M django/contrib/gis/db/backends/oracle/operations.py
M django/contrib/gis/db/backends/postgis/models.py
M django/contrib/gis/db/backends/postgis/operations.py
M django/contrib/gis/db/backends/spatialite/models.py
M django/contrib/gis/db/backends/spatialite/operations.py
M django/contrib/gis/tests/utils.py

Log Message:
-----------
[1.7.x] Gave unique names to SpatialRefSysModels.

Prevented clashes in the app registry.

Fixed #22790. Thanks timo for the report.

Backport of 6e5651e from master