had to change the structure of the plugin considerably, was too messy to
structure it to do the calculations on a per-function basis

Change-Id: I4edee7735f726101105c607368124a08dba21086
Reviewed-on: https://gerrit.libreoffice.org/40516Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>