look for fields which can be declared inline in the parent class.

start with some likely candidates in svx

Change-Id: I56cdca273272b72bb728ed2e3f5e1e976f8c7c32
Reviewed-on: https://gerrit.libreoffice.org/36262Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>