HEADSUP: USE_NONDEFAULT_X11BASE support going away soon

[Florent Thoumie]

Last year when X11BASE was merged with LOCALBASE, we allowed people
who wanted to retain separate prefixes to do so using the
USE_NONDEFAULT_X11BASE variable. This support will be removed soon
(read in less than two months).

Once this is done, references to X11BASE can start being removed
progressively, as the ports are updated. For that reason, we ask you
not to include any reference to X11BASE in your submissions from now
on.

-- 
Florent Thoumie
flz at FreeBSD.org
FreeBSD Committer