REF: change flag -t to -vertfile (-t is deprecated by -vertfile). Fix issue #781.
REF: change flag -t to -vertfile (-t is deprecated by -vertfile). Fix issue #781.

3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox