and improve the script a little

Change-Id: I2792ea4dd5df3a50736fbe209225c3f16fb86b84
Reviewed-on: https://gerrit.libreoffice.org/20033Reviewed-by: Noel Grandin <noelgrandin@gmail.com>
Tested-by: Noel Grandin <noelgrandin@gmail.com>