This is similar to 'Use tryToRecreateBorder for better BW comp with LO'
(see commit 8259a99f41), but now for
transparency gradients.
Change-Id: I1c2e11562fa998c364896d517f4ed3bfe92f6c15
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/152508
Tested-by: Jenkins
Reviewed-by: Regina Henschel <rb.henschel@t-online.de>
8aa623714f