Could you look over the attached ebuild and let me know what needs to be changed?
Created attachment 31452 [details] commons-el-1.0.ebuild
According to zx, the jakarta-commons eclass is going to be removed soon. I would recomment you just use java-pkg instead. In practice, it means you'll have to add a src_install, too. The reason he wants it removed is that many of the commons packages change vital parts of their directory structure and build system between releases, and thus need a lot of per-package work-arounds.
This has been superseded by #37924.