Modified and approved multicol-span-all-margin-bottom-001,
multicol-span-all-margin-nested-001 and
multicol-span-all-margin-nested-002

--HG--
rename : contributors/opera/submitted/multicol/multicol-span-all-margin-bottom-ref.xht => contributors/opera/submitted/multicol/multicol-span-all-margin-bottom-001-ref.xht
rename : contributors/opera/submitted/multicol/multicol-span-all-margin-nested-ref.xht => contributors/opera/submitted/multicol/multicol-span-all-margin-nested-001-ref.xht
rename : contributors/opera/submitted/multicol/multicol-span-all-margin-nested-2-ref.xht => contributors/opera/submitted/multicol/multicol-span-all-margin-nested-002-ref.xht