bffvalidator (Microsoft Office Binary File Format Validator) can now be
used for verification of MS binary export tests

Change-Id: Ibc65e64726a454cdd33946006b36427b9cc6fbd2
Reviewed-on: https://gerrit.libreoffice.org/26405Reviewed-by: Thorsten Behrens <Thorsten.Behrens@CIB.de>
Tested-by: Thorsten Behrens <Thorsten.Behrens@CIB.de>