Merge libmemcached from Debian unstable for 22.04

[Bryce Harrington]

Upstream: 1.0.18
Debian: 1.0.18-4.2
Ubuntu: 1.0.18-4.2ubuntu3

Debian typically updates libmemcached every 1 months on average, but it was last updated 21.10 and looks overdue. Check back in on this monthly.

### Old Ubuntu Delta ###

libmemcached (1.0.18-4.2ubuntu3) impish; urgency=medium

  * No-change rebuild to build packages with zstd compression.

 -- Matthias Klose <email address hidden> Thu, 07 Oct 2021 12:16:41 +0200

libmemcached (1.0.18-4.2ubuntu2) focal; urgency=medium

  * No-change rebuild for libgcc-s1 package name change.

 -- Matthias Klose <email address hidden> Sat, 21 Mar 2020 13:36:38 +0100

libmemcached (1.0.18-4.2ubuntu1) disco; urgency=medium

  * d/p/fixing_missing_null_termination.patch:
    - Fix missing null termination in PROTOCOL_BINARY_CMD_SASL_LIST_MECHS
      response handling (LP: #1573594)

 -- Ioanna Alifieraki <email address hidden> Fri, 18 Jan 2019 13:04:25 +0000

[Sergio Durigan Junior (sergiodj)]

FWIW, the last upload of libmemcached was done back in 2017. Upstream seems kind of abandoned (last release was in 2014).

[Bryce Harrington (bryce)]

Good point, looks like my metadata is incorrect.

[Bryce Harrington (bryce)]

[Nothing to merge yet]