Forward ported code from 1.5 that adds backwards compatibility with legacy message length.
See commit 9e718307 for details.

Thanks to Ofir Ovadia for the initial patch.

This is a security fix; disclosure to follow shortly.

This is a security fix. Disclosure will follow shortly.

Thanks Benjamin Bach for the report and initial patch.

This is a security fix; disclosure to follow shortly.

Fixed bad code introduced in 2f9d1576.

Refs #22481.

Refs #22451.

Removed old test runner test cases.

This is useful for tests manually calling migrate inside a testcase,
for normal usage this should make no difference, since there is no
surrounding transaction after all. If there is one we still try to
leave the transaction in a useable state (for postgres at least).

If this commit turns out to be causing issues, settings savepoint=False
is probably the right fix :)

The model_inheritance_same_model_name tests couldn't be run without the
model_inheritance tests. Make the problem go away by merging them.

Thanks timo for the report.

These files were added as part of #12658, which pertained to the old django.test.simple test runner. No tests call them anymore.

Thanks Jon Foster for the report.

Changed the migration autodetector to remove models last so that FK
and M2M fields will not be left as dangling references. Added a check
in the migration state renderer to error out in the presence of
dangling references instead of leaving them as strings. Fixed a bug
in the sqlite backend to handle the deletion of M2M fields with
"through" models properly (i.e., do nothing successfully).

Thanks to melinath for report, loic for tests and andrewgodwin and
charettes for assistance with architecture.

Thanks tobami at gmail.com for the report.

Binary mode added in ed532a6a is not supported by ZipFile.
Refs #22399.

This might help on systems where default encoding is not UTF-8 (and
on Python 3).
Thanks bacilla for the report.

Thanks to aruseni for the report.

Fixed #22464 - included contrib/gis/static in tarball

After switching to setuptools in commit 66f546b9,
contrib/gis/static isn't included in tarball anymore, this commit adds
that path to be `recursive-include` in `MANIFEST.in`

This reverts commit 00e3b9a2.

It's causing a regression when tested with the proxy_model_inheritance tests.

The warning hint of `_check_test_runner` of 1.6 compatibility had a link
to a general release note. The link should be edited to refer the
relevant "Backwards incompatible changes in 1.6" section that documents
the cause and the possible solutions and workarounds of the warning.