Refs 1014ba02

Thanks Denis Cornehl for help with the patch.

Thanks to bmispelon and uruz for the initial patch.

This only happens if USE_TZ = False and pytz is installed (perhaps not
the most logical combination, but who am I to jugde?)

Refs #23714 which essentially fixed the same problem when USE_TZ = True.

Thanks Florian and Carl for insisting until I wrote a complete patch.

Pickling a `SimpleLazyObject` wrapping a model did not work correctly; in
particular it did not add the `_django_version` attribute added in 42736ac8.
Now it will handle this and other custom `__reduce__` methods correctly.

Thanks Seth Gottlieb for help with the documentation and
Carl Meyer and Joshua Kehn for reviews.

Refs #24704.

This also fixes a test failure on Python 2 when Django is installed in a
non-ASCII path. This problem cannot happen on Python 3.

* Added helpers to test uncached and cached access.
* Fixed test_project_root_locale: it duplicated test_locale_paths_setting.
* Rewrote test_only_new_files: test more cases.

* When some old files contain errors, the second call to
  gen_filenames() should return them.
* When some new files contain errors, the first call to
  gen_filenames(only_new=True) should return them.

Thanks Flavio Curella and Berker Peksag for the initial patch.

Forwardport of ae1d663b
from stable/1.8.x plus more.

Implemented __str__() to return the string-representation of the
proxied object, not the proxy itself, if the lazy object didn't have
a string-like object in its resultclasses.

Renamed the mime_type properties of RssFeed and Atom1Feed to
content_type and start deprecation for the old names.

This is a security fix; disclosure to follow shortly.

This is a security fix; disclosure to follow shortly.

Thanks Jacob Rief for the report and Tim Graham for the review.

Specifically stopped using the dir argument.

Refs #24324 -- Fixed Python 2 test failures when path to Django source contains non-ASCII characters.

Report and original patch by Kay Cha.