refactored tests a bit more

--HG--
rename : contributors/adobe/incoming/css3-regions/transforms/reference/regions-transforms-004-alt-ref.html => contributors/adobe/incoming/css3-regions/transforms/reference/regions-transforms-012-alt-ref.html
rename : contributors/adobe/incoming/css3-regions/transforms/reference/regions-transforms-004-ref.html => contributors/adobe/incoming/css3-regions/transforms/reference/regions-transforms-012-ref.html
rename : contributors/adobe/incoming/css3-regions/transforms/regions-transforms-012.html => contributors/adobe/incoming/css3-regions/transforms/regions-transforms-004.html
rename : contributors/adobe/incoming/css3-regions/transforms/regions-transforms-004.html => contributors/adobe/incoming/css3-regions/transforms/regions-transforms-012.html