Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

Avoid linting GNU contrib'ed stuff, even if the build engineer asked
for it (via WANT_LINT). It's Just Too Noisy.