Update library: ADODB to 5.21.1 (incl. security)

[Doris Tam]

Security - 5.21.0 incl.5.21.0-beta.1 - 2020-12-20
- adodb: prevent SQL injection in SelectLimit()
- session: add 'httponly' flag to cookie

Minor - Deprecation
- mysqli: Deprecate $optionFlags property in favor
of standard setConnectionParameter() method

[Doris Tam (doristam)]

https://reviews.mahara.org/11927

[Mahara Bot (dev-mahara)]

Reviewed: https://reviews.mahara.org/12045
Committed: https://git.mahara.org/mahara/mahara/commit/adeb066d29ec4c65fea26c26b83afcfebf8cbc7a
Submitter: Robert Lyon (<email address hidden>)
Branch: master

commit adeb066d29ec4c65fea26c26b83afcfebf8cbc7a
Author: Doris Tam <email address hidden>
Date: Thu Sep 30 13:49:52 2021 +1300

Bug 1940611 - Update README.Mahara on removed files

Change-Id: I32e15b7f9088c385d6ef46da581044a498a7722f

[Mahara Bot (dev-mahara)]

Reviewed: https://reviews.mahara.org/11932
Committed: https://git.mahara.org/mahara/mahara/commit/de28747b60d5dbf03c479bf4255fc1195655610e
Submitter: Robert Lyon (<email address hidden>)
Branch: master

commit de28747b60d5dbf03c479bf4255fc1195655610e
Author: Robert Lyon <email address hidden>
Date: Mon Aug 15 12:27:03 2016 +1200

Bug 1940611 - ADODB customisation: Modified session variable setting in ADOdb adodb-pager.inc.php

Change-Id: I752b9fee75e789eb78278c7f2d96a3be2c128520

[Mahara Bot (dev-mahara)]

Reviewed: https://reviews.mahara.org/11931
Committed: https://git.mahara.org/mahara/mahara/commit/1144f6c9f549947328501742afacf92f9db068b0
Submitter: Robert Lyon (<email address hidden>)
Branch: master

commit 1144f6c9f549947328501742afacf92f9db068b0
Author: Doris Tam <email address hidden>
Date: Mon Aug 23 15:20:48 2021 +1200

Bug 1940611 - ADODB customisation: Check for valid columns in adodb postgres64 driver MetaIndexes fn

Change-Id: I3d640ad3aa75c70478418d370857d000d19cd0d4

[Mahara Bot (dev-mahara)]

Reviewed: https://reviews.mahara.org/11934
Committed: https://git.mahara.org/mahara/mahara/commit/50286d3e06301d1ae8d864f59d1f33b32de77763
Submitter: Robert Lyon (<email address hidden>)
Branch: master

commit 50286d3e06301d1ae8d864f59d1f33b32de77763
Author: Robert Lyon <email address hidden>
Date: Mon Aug 10 12:39:36 2015 +1200

Bug 1940611 - ADODB customisation: Escaping names when showing table / index

Change-Id: Ib26f3a5390a43b2e8dd89e3d2ad74d2d616c9139

[Mahara Bot (dev-mahara)]

Reviewed: https://reviews.mahara.org/11927
Committed: https://git.mahara.org/mahara/mahara/commit/6cb280062d3b9f0b03854a353ad8de4732d8d6bb
Submitter: Robert Lyon (<email address hidden>)
Branch: master

commit 6cb280062d3b9f0b03854a353ad8de4732d8d6bb
Author: Doris Tam <email address hidden>
Date: Fri Aug 20 17:06:40 2021 +1200

Security bug 1940611: Update ADODB to 5.21.1

Removed 'ADODB_ASSOC_CASE_* calls...' customisation as it's not needed
anymore.

Change-Id: I82f67ab97b5f2520becb4e7040c6ce5ff8feb010

[Mahara Bot (dev-mahara)]

Reviewed: https://reviews.mahara.org/11928
Committed: https://git.mahara.org/mahara/mahara/commit/88f2803e00d9e88d867e0481da9715c25da35335
Submitter: Robert Lyon (<email address hidden>)
Branch: master

commit 88f2803e00d9e88d867e0481da9715c25da35335
Author: Martin Langhoff <email address hidden>
Date: Sat Dec 1 23:54:23 2007 +1300

Bug 1940611 - ADODB customisation: RecordSet_postgres7->MoveNext() - remove expensive is_array()

And implicit count() of the array keys/columns. This shaves a good 5%
of the exec time of get_records('config')

(cherry picked from commit 4652e5617d9616e3f61e78df5a4c863e16ac5634)

Change-Id: Id23af8aa2ce36c0e94bcdaf1bf6c1479030e5eed
Signed-off-by: Francois Marier <email address hidden>