The ebuild is currently marked "as-is" which is deprecated.
The HOMEPAGE says:
In lieu of a licence: Fonts in this site are offered free for any use;
they may be opened, edited, modified, regenerated, posted, packaged and
I'd suggest adding this as a new license (and including it in the FREE-DOCUMENTS license group).
Fixed in CVS.
I've added Unicode_Fonts_for_Ancient_Scripts to the MISC-FREE-DOCS license group.