This also removes a lot of useless recursive locks.

Change-Id: Ie7f337683146bb5738f11b8f9194e73437312f03
Reviewed-on: https://gerrit.libreoffice.org/40325Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>