This squashes the following commits:

From f68929ac Mon Sep 17 00:00:00 2001
From: Thorsten Behrens <Thorsten.Behrens@CIB.de>
Date: Fri, 9 Mar 2018 01:38:26 +0100
Subject: gpg4libre: fix failing gpg test due to over-long filenames

With long workdir path, gpg sometimes fails with 'gpg: can't connect
to the agent: File name too long' error.
WK recommends to create preferred socket dir under /run/user, needs
prepping though via gpgconf.

See https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=84720

From d7ecf4a4 Mon Sep 17 00:00:00 2001
From: Rene Engelhard <rene@debian.org>
Date: Sun, 18 Mar 2018 11:25:41 +0100
Subject: properly check for gpgconf (and --create-socketdir) working

From d6ed1d41 Mon Sep 17 00:00:00 2001
From: Rene Engelhard <rene@debian.org>
Date: Sun, 18 Mar 2018 19:06:58 +0100
Subject: actually add GPGCONF to config_host.mk.in

From 7a95ee8d Mon Sep 17 00:00:00 2001
From: Rene Engelhard <rene@debian.org>
Date: Sun, 18 Mar 2018 19:26:45 +0100
Subject: actually add HAVE_GPGCONF_SOCKETDIR to config_host.mk.in...

From 5204a514 Mon Sep 17 00:00:00 2001
From: Rene Engelhard <rene@debian.org>
Date: Sun, 18 Mar 2018 19:28:55 +0100
Subject: revert accidentially comitted local changes :(

From bc358d39 Mon Sep 17 00:00:00 2001
From: Rene Engelhard <rene@debian.org>
Date: Sun, 18 Mar 2018 20:36:45 +0100
Subject: this is sh, not make...

Change-Id: I7880fd7eee57cedc19b72348b45f0c1389409fe6
Reviewed-on: https://gerrit.libreoffice.org/51521Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>
(cherry picked from commit 74d438f7)