Reviewed by Loic Bistuer and Tim Graham.

Thanks lvella at gmail.com for the report.

Thanks Cloudream for the report.

Thanks traff and FunkyBob for work on the patch.

Reviewed by Trac alias MarkusH.

The current auth backend code catches TypeError to detect backends that
do not support specified argumetnts. As a result, any TypeErrors raised
within the actual backend code are silenced.

In Python 2.7+ and 3.2+ this can be avoided by using inspect.getcallargs().
With this method, we can test whether arguments match the signature without
actually calling the function.

Thanks David Eyk for the report.

Minor spelling correction in ModelForms docs

Thanks chrismedrela for the report.

Fixed typo in docs/topics/conditional-view-processing.txt

Modified django.utils.dateformat module, moving __init__() method and
timezone-related format methods from DateFormat class to TimeFormat
base class. Modified timezone-related format methods to return an
empty string when timezone is inappropriate for input value.

Thanks Susan Tan. Refs #19949.

This only affests reporting not data collection and allows coverage.py
to succesfully finish the generation of e.g. the HTML report.

Cases of code whose execution data is collected during the run phase but
for which no associated source code files can be found at the reporting
phase include tests with egg files and Python module files created at
test execution-time.

Added it to the list of dirs ignored by tests/runtests.py.

Thanks shai for the suggestion.

Thanks epandurski at gmail.com for the report.

Thanks @timgraham and @jdunck for the code reviews and Kronuz for bug
report and initial patch.

Schema alteration

Conflicts:
	django/db/backends/oracle/base.py
	django/db/backends/postgresql_psycopg2/base.py
	django/db/models/signals.py
	tests/queries/tests.py

Added settings.SESSION_SERIALIZER which is the import path of a serializer
to use for sessions.

Thanks apollo13, carljm, shaib, akaariai, charettes, and dstufft for reviews.

The view tried to display links to a ModelAdmin's change_view, which
resulted in NoReverseMatches if get_urls was overridden to remove the
corresponding url.

The __eq__ method now considers two instances without primary key value
equal only when they have same id(). The __hash__ method raises
TypeError for no primary key case.

Fixed #18864, fixed #18250

Thanks to Tim Graham for docs review.

This reverts commit ce0e86cf.

The check is necessary if 'ENGINE' is an empty string.
Thanks apollo13 for pointing this out.