Several fast/multicol DRT tests fail.
These tests were introduced during 8u112 Webkit merge, and are not present in older DRT workspace.
Some of the tests have no expected files; other tests fail.
Tests fail with 8u102, 8u112 and 9.

Affected tests:
fast/multicol/client-rects-spanners-complex.html
fast/multicol/client-rects-spanners.html
fast/multicol/content-bounding-box-rtl.html
fast/multicol/newmulticol/client-rects.html
fast/multicol/newmulticol/compare-with-old-impl/hit-test-end-of-column-with-line-height.html
fast/multicol/pagination/LeftToRight-tb-hittest.html
fast/multicol/pagination/RightToLeft-max-width.html
fast/multicol/pagination/RightToLeft-rl-dynamic.html
fast/multicol/pagination/RightToLeft-rl-hittest.html
fast/multicol/pagination/nested-transforms.html
fast/multicol/scrolling-column-rules.html
fast/multicol/tall-image-behavior-lr.html
fast/multicol/tall-image-behavior-rl.html
fast/multicol/tall-image-behavior.html