How to use these scripts?
First of all, your operating sytem must be Gentoo Linux. Next, you should have a portage overlay. If you don't have one, create it like this (as root):
mkdir -p /usr/local/portage
echo 'PORTDIR_OVERLAY="/usr/local/portage"' >> /etc/make.conf
Now take the ebuild which you want to install, and save it to the same path as it is located on my server (except the /usr/local of course). Now hold your breath, and execute:
emerge --digest -av <name>
Whereas <name> is (as usual): .../portage/<category>/<name>/<name>-<version>.ebuild
Note: Not all of these ebuilds are actually in a working state ;-)