[gentoo-project] Maintain original udev directory locations

[Richard Yao]

The udev situation is a mess. Directory locations are being changed and
there is no way for portage to fix things on people's systems. Most
recently, /lib/udev moved to /usr/lib/udev, against the advice of the
systemd developers. Now whenever a user's system is upgraded to the
newer udev, everything that installs files into that location breaks and
the cause is far from obvious.

Lets keep udev stuff in the original directories until portage is
capable of rebuilding packages that depend on certain system directory
locations being constant. I would like the council to vote on this matter.