sun has changed the urls where to download j2ee jars and docs for version 1.3 attached you find the ebuilds and their diffs just changed a var anyway
Created attachment 99447 [details, diff] sun-j2ee-1.3.1-r2.ebuild.diff
Created attachment 99448 [details, diff] sun-j2ee-1.3.1-r3.ebuild.diff
Created attachment 99449 [details] sun-j2ee-1.3.1-r2.ebuild
Created attachment 99450 [details] sun-j2ee-1.3.1-r3.ebuild
Created attachment 101882 [details, diff] diff against anonymous cvs version this should be applied directly to the gentoo-x86 cvs, as per http://anonsvn.gentoo.org/
Fixed in CVS. Thanks for the patch!