Save additional memory in SVG*Element classes, by introducing SVGElementRareData
Created attachment 47623 [details]
Comment on attachment 47623 [details]
> + SVGElementRareData works just like NodeRareData. Unlike ElementRareData, we're not inheriting from
> + NodeRareData in SVG, as we don't need all the rare data stored there, unlike Element.
Unlike unlike ;-)
Landed in r54009. Oops forgot to change the ChangeLog, will fix this next time I commit.