This is a security fix; disclosure to follow shortly.

This is a security fix; disclosure to follow shortly.

The fix for #20874 caused a MySQL specific failure.

Fixed overflow for the "Recent Actions" widget on the admin index.

Previously the CSS targeted "li.changelink" and therefore didn't
work for the "add" and "delete" actions.

Refs #14868.

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

While using USE_L10N, line numbers and IDs were printed as comma (or
locale equivalent) separated values.

Thanks Kronuz for the report and intial patch.

Fixes #20861.

Thanks KyleMac for the report, regebro for the patch, and Aymeric for the test.

This setting does for new directories what FILE_UPLOAD_PERMISSIONS
does for new files.

Thanks jacob@ for the suggestion.

Thanks André Augusto.

Clarified misleading wording about squashing commits

Also, change tests to be based on SimpleTestCase.

Thanks Giggaflop for the suggestion.

Thanks garrison for the report.

Use `usegmt` flag in formatdate

This prevents the test client context from being lost when the client
is used in a nested fashion.

Thanks hvendelbo for the suggestion and koenb for the draft patch.

Improved queryset handling and docs for (Single|Multiple)ObjectMixin.

Clarified meaning of models.User.is_authenticated()

This means it doesn't break for people who are doing
`cleaned_data = super(FooForm, self).clean()`.

If it does, that will be used as the cleaned_data. The default
implementation has been changed to match this change.

Fixed #20484 again -- added note to field documentation

Slightly cleaner and faster than string manipulation.
 
This flag has been available since Python 2.4:
http://docs.python.org/2/library/email.util.html#email.utils.formatdate

The bug was already fixed by 01b9c3d5,
so only tests added.

At the same time promote_joins()'s uncoditional flag is gone, it isn't
needed for anything any more.