UPDATING? - terminus font installation directory changed

[Andriy Gapon]

I accidentally noticed that I started to have troubles with terminus
font (x11-fonts/terminus-font) after recent update to version 4.20. No
wonder, it seems that the port now installs font files into a separate
directory lib/X11/fonts/terminus-font instead of previous
lib/X11/fonts/local.

I think that such a change warrants a note in UPDATING, so that people
know to add the new path to their font paths.

-- 
Andriy Gapon