Moving multicol-fill-balance-001.xht and
multicol-fill-balance-001-ref.xht for now.
This test should fail if the UA does not support
multi-columns features. I will try to tune this test.

--HG--
rename : contributors/gtalbot/submitted/multicol-fill-balance-001-ref.xht => contributors/gtalbot/incoming/multicol-fill-balance-001-ref.xht
rename : contributors/gtalbot/submitted/multicol-fill-balance-001.xht => contributors/gtalbot/incoming/multicol-fill-balance-001.xht
rename : contributors/gtalbot/submitted/support/red20x20.png => contributors/gtalbot/incoming/support/red20x20.png