Update to vim-9.1.2144.
Update to setuptools-82.0.0 (Python module).
Update to man-pages-6.17.
Update to m4-1.4.21.
Update to linux-6.18.10.
Update to less-692.
Update to iana-etc-20260202.
Update to binutils-2.46.0.
Also the Makefle of LFS was chagned to make the default build to be
for systemd.