Bug 1104589 - Improve the mapping of lang tags to langGroup codes. r=smontagu
Bug 1096224 - part 1 - CalculateBlockSideMargins should be working in the containing block's writing mode. r=smontagu
Bug 1096224 - part 2 - Fix writing mode mismatch in margin calculation in PlaceBlock. r=smontagu
Bug 1096224 - Reftest for margins on an orthogonal block. r=smontagu