Fix order of traversal in 2d-array printing.
Fix order of traversal in 2d-array printing.

jjdekker/libminizinc,jjdekker/libminizinc,jjdekker/libminizinc,jjdekker/libminizinc,tias/libminizinc,tias/libminizinc,nathanielbaxter/libminizinc,nathanielbaxter/libminizinc,nathanielbaxter/libminizinc,nathanielbaxter/libminizinc