OPT: updated names of Ants functions to adapt to the new version of master
OPT: updated names of Ants functions to adapt to the new version of master

Former-commit-id: 05b1ddf4e3146819b4200bb2db3cb902e0a4428a
Former-commit-id: eee4e9e17a94578ebb6392514a57b37c6f81ff19
3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox