Fix build against newer protocol buffers library.

Regenerate source from missing protocol description fetched from:
https://bitbucket.org/statgen/plinkseq/raw/976c492c6e11e81aa798e2c4c20bcf17ea4073a1/lib/variant.proto
https://bitbucket.org/statgen/plinkseq/raw/976c492c6e11e81aa798e2c4c20bcf17ea4073a1/lib/pp.proto

Bump PKGREVISION.
Document the dependencies for building the guide from source.
Closes PR/31473.
Use the netdb_1thread resolver, fixes PR pkg/33105.
Forgot to bump the revision. This is a leaf package, so it is ok during
the freeze.
Keep in sync with OpenBSD: add octeon port.
From jmc@openbsd.
Update bind99 to 9.9.2pl2 (BIND 9.9.2-P2).

	--- 9.9.2-P2 released ---

3516.	[security]	Removed the check for regex.h in configure in order
			to disable regex syntax checking, as it exposes
			BIND to a critical flaw in libregex on some
			platforms. [RT #32688]
Update bind98 to 9.8.4pl2 (BIND 9.8.4-P2).

	--- 9.8.4-P2 released ---

3516.	[security]	Removed the check for regex.h in configure in order
			to disable regex syntax checking, as it exposes
			BIND to a critical flaw in libregex on some
			platforms. [RT #32688]
Note update of bind98 and bind99 packages.

	net/bind99	9.9.2pl2
	net/bind98	9.8.4pl2