[gentoo-server] Old Gentoo server - portage outdated - how to upgrade in-place

[Todd Hebert]

Does anyone know of a howto etc.. for dropping a new portage version 
into a system where you can't BUILD a new portage version due to license 
restrictions. (Portage doesn't understand the EAPI 2 license scheme, and 
there are items that require it in order to build.)