fdo#84938: replace TIB_ constants with enum

Change-Id: I435ce2331fb49e7ce9fe97bdfddfaef706759a84
Reviewed-on: https://gerrit.libreoffice.org/12023
Reviewed-by: Noel Grandin <noelgrandin@gmail.com>
Tested-by: Noel Grandin <noelgrandin@gmail.com>