Create the user directory temporary in the temp directory and
use that to load the dictionaries (bundled extensions).

Co-author; Jan Holesovsky <kendy@collabora.com>

Reviewed-on: https://gerrit.libreoffice.org/49495Reviewed-by: Jan Holesovsky <kendy@collabora.com>
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Tamás Zolnai <tamas.zolnai@collabora.com>
(cherry picked from commit ecfd40a1)

Change-Id: I5c7c824b68571048ce870fd5218cb47a333f3ad8
Reviewed-on: https://gerrit.libreoffice.org/52347Reviewed-by: Jan Holesovsky <kendy@collabora.com>
Tested-by: Jan Holesovsky <kendy@collabora.com>