Can this get in to Portage?
See bug 49494 -- several other packages need to be updated in order to compile against freetype >= 2.1.7.
The update of this package doesn't depend on that, it triggers it. But I tried this pack and had some weird issues, so held off adding it.
Added freetype 2.1.9 (p.mask) Someone of cjk fame should check that patch, the 2.1.7 version doesn't apply anymore so i commented it out for now.
http://bugs.gentoo.org/show_bug.cgi?id=57796 2.1.9 is causing Mozilla crashing.