REF: utils/printv: now returns name and line of parent function if error
REF: utils/printv: now returns name and line of parent function if error

Former-commit-id: 048bb885b5d0cc972b11f9aaf5142391712e886a
Former-commit-id: b2778c409e7aad427d6df0548c8aabdbc5f9fad5
3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox