Remove support for XFree8-4.
From now on, X_WINDOW_SYSTEM != "xorg" is not supported anymore.
PR: ports/119418
Submitted by: flz
Approved by: portmgr (pav)
update to 4.0.3. o use internal freetype2 for consistency with x11/XFree86-4.
o added xthreads obtained from x11/XFree86-4. o install "ws" type config
sample for xdm. o build DRI only if kernel source installed in /sys. o fix
Riva128/SGRAM driver(patch-riva_hw.c).