ODF export in xmloff does the same

Reviewed-on: https://gerrit.libreoffice.org/20051Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Andras Timar <andras.timar@collabora.com>
(cherry picked from commit 11b7a2c8)

Change-Id: I78ddbef3ac96f10f334c45a467dafb95bb9e3453
Reviewed-on: https://gerrit.libreoffice.org/20066Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
(cherry picked from commit 7cb41280)