Rework table cells so that the y() coordinate never lies.
Created attachment 26950 [details] Patch that not only passes but also progresses layout tests :)
Comment on attachment 26950 [details] Patch that not only passes but also progresses layout tests :) r=me, afaict this looks like it should help perf, but maybe i'm mistaken. anyhoo, r=me is conditional on perf being good. also looking at the bit fields for m_intrinsicPaddingTop, m_intrinsicPaddingBottom, and m_widthChanged -- i think we should look at rearranging these to place n_widthChanged first, to reduce the liklihood that we'll end up with either horrific load alignment and/or an unnecessary word being added to RenderTableCell
Fixed.