the rust std library has been changed to not try to reallocate
a guard page on the stack.
as the rust std library is statically linked in rust programs,
bump REVISION to force reinstall.
cc >= 1.0.73 (latest) and libc >= 0.2.113 (latest is 0.2.232) are needed
for powerpc64 and riscv64 support. semarie@ will take care of the
lang/rust bits.
Help from semarie@, powerpc64 tests by gkoehler@, ok semarie@
tweaks from sthen (WANTLIB, WRKDIST), ok sthen
DNS query tool. Provides highlighting by default and some useful protocol
debugging features, and uses pledge(2) and unveil(2) on OpenBSD.