[1.6.x]  Fixed #20557 -- Properly decoded non-ASCII cookies on Python 3.

Thanks mitsuhiko for the report.

Non-ASCII values are supported. Non-ASCII keys still aren't, because the
current parser mangles them. That's another bug.

Simplified backport of 8aaca651 and f5add47 from master.
[1.6.x] Fixed #16992 -- Added InnoDB warning regarding reuse of AUTO_INCREMENT values.

Thanks kent at nsc.liu.se for the report.

Backport of c54fa1a7bc from master
[1.6.x] Fixed an encoding issue in the test client.

Refs #20530.

Backport of 7bb62793 and 476b0764 from master.

Conflicts:
	django/test/client.py
[1.6.x] Fixed #20530 -- Properly decoded non-ASCII query strings on Python 3.

Thanks mitsuhiko for the report.

Backport of 65b6eff3 and adaptation of 8aaca65 from master.
[1.6.x] Fixed #20938 -- Added cached sessions note to deployment checklist.

Thanks mjtamlyn for the suggestion.

Backport of 4e784f337c from master
[1.6.x] Fixed #20005 -- Documented that Oracle databases need execute permission on SYS.DBMS_LOB.

Thanks jafula for the suggestion.

Backport of a86ecc80a2 from master
[1.6.x] Fixed 9244447c -- incomplete backport.

The test client had been refactored in the mean time. This commit
de-factors the fix. Refs #20530.
[1.6.x] Fixed deprecation warning on Python 3

Backport of b7451b72 from master.
Fixed #20409 -- Clarified how unique_for_date works when USE_TZ is set.
[1.6.x] Fixed #21068 -- Added some docs for DiscoverRunner

Thanks jcd.

Backport of e4b012feeb from master
[1.6.x] Fixed #18766 -- Pointed to pytz when LocalTimezone fails.

Thanks void for the report.

Backport of ded11aa6 from master.
[1.6.x] Hardened the test introduced in ded11aa6. Refs #18766.

Inputs acceptable to time.mktime are platform-dependent.

Backport of 1a1e1478 from master.
[1.6.x] Further hardening. Refs #18766.

Backport of c687bf0 from master.
[1.6.x] Fixed #20707 -- Added explicit quota assignment to Oracle test user
To enable testing on Oracle 12c
[1.6.x] Fixed #16895 -- Warned about cost of QuerySet ordering

Thanks outofculture at gmail.com for the suggestion.

Backport of cbf08c6b0c from master
[1.6.x] Fixed spelling; refs #16895.

Thanks Panagiotis Issaris for the report.

Backport of fb51c9a0f2 from master